Metal detector with your own hands Terminator-3 from the MD4Y Forum: Schemes and Instructions - Vashlectric

Metal detector Terminator 3 do-it-yourself: detailed instructions

Metal detector with your own hands Terminator-3 from the MD4U forum: Schemes and Instructions

Metal detector Terminator For many years, occupies an honorable place in the ranks of self-made metal detectors. Over the years, many improvements were made, the result of which are various modifications of this instrument.

Consider the two-tonal metal detector Terminator 3 (Fig. 1), working on the principle of induction balance. In essence, this is an improved metal detector Terminator 4.

Its main features are: a small power consumption, discrimination of metals, non-ferrous metals mode, the mode is only gold and very good characteristics of the search depth, in comparison with semi-professional branded metal detectors.

With relatively small cost and time costs, anyone can collect the Metal Detector Terminator 3 with its own hands, if it is accurately guided by the detailed instructions in this article.

Making a circuit board

The scheme is collected on the circuit board. Find on sale fee under a specific scheme problematic, so we will create it with your own efforts. Below is an accurate action plan for successful circuit board:

  1. Print the circuit board pattern (Fig. 2).

Cut off the extra edges, leaving 10 mm in the reserve on each side. We buy, corresponding to the size of the scheme, foil textolite with a reserve of 10 mm on all sides. We clean the textolit of sandpaper to shine, while trying not to wipe the copper layer;

  1. We assign the pattern of the scheme on the textolit. Fix it with super glue or tape from the edges left in stock. Kerner or screwing the future holes and reveal the scheme from the textolite. We produce drilling holes in the pattern of the circuit board. For drilling, drill from 0.5 to 0.7 mm or a needle with a broken loop. We make a cutting of the textolite to the metal to the metal, you can also use other instruments;
  2. Gently, guided by the mounting scheme, put the lacquer or permanent marker of the track. We are waiting for complete drying;
  3. We carry the board. To do this, we will need 3 percentage of hydrogen peroxide, citric acid and the usual salt. In the dishes of a small size, we pour 100 ml of hydrogen peroxide. Add 30 g of citric acid and 5 g of salts. We stir up to dissolution, after which we put the textolol in the vessel. We are waiting until all copper coating on the board is dissolved. To accelerate the process, it is recommended to heat the solution and maintain its circulation with stirring or air;
  4. After taking the board, we remove the marker or varnish acetone. Wash the board with water or alcohol from the residuals of the solution. The obtained tracks are brought in a small amount of solder, trying not to spare holes for details. The board is ready for installation details.

The manufacturing process can be viewed on the video attached below.

Assembling the scheme and selection of parts

The metal detector scheme is shown in Figure 3. Guided by it and the circuit board of the circuit board, we make the board assembly.

Details marked on an asterisk can be selected by an experimental way to improve the characteristics of the device. But to begin with, it is recommended to collect strictly according to the scheme, and experiment when you reach the device setup.

The list of parts and comments on them are listed in the table in Figure 4, and in Figure 5, the Cocoovka chip and transistors are indicated.

The soldering is starting with connecting jumpers from radio components. To do this, use the lacquered or insulated wire of the smallest section. The jumpers are marked on the mounting scheme with simple thin lines.

On the part of the tracks we solder the SMD details - the radio elements of miniature sizes and increased thermal resistance. They are isolated yellow. Then we solder the microcircuits and the remaining parts.

For the elements of adjustment, turn on and off, changing the mode, batteries, sound and light indication - display the wires to secure these parts on the housing. For adjusting resistors we find suitable caps. Also output the connector for the sensor wire.

The sample board of the board with the connector, regulators and switches is shown in Figure 6.

Capacitor C2.3 and SA3 switch assemble mounted mounting.

To check the performance of the collected circuit, connect the battery with a voltage of 9 V. When the device is turned on, the LED should light up and go out, as well as when it is turned off. When touching the connector for the sensor, the sound of the metal detector must stop at a small period of time.

In the maximum position of the sensitivity regulator, there must be a tonal sound, and with the minimum - missing. Do not forget to check all control voltages in the diagram. To do this, we include a constant voltage mode in the tester in the range of 20 V.

Minus probe apply to minus fees, and the plus measure the voltages on the points according to the scheme.

The housing is made from any plastic box of the desired size and is fixed on the metal detector's rod. You can use the housing from other metal detectors, such as the terminator M or Trio Terminator. We subscribe buttons and regulators in accordance with the functions performed.

With successful creation of such a scheme, you will receive a valuable experience that will need to collect the most complex metal detector with your own hands.

Components Sensor (coil) Metal detector

An important part of any metal detector is the sensor. It consists of coils in the housing, which is also searching by transmitting and receiving the signal.

To assemble the metal detector sensor, you will need the next set of components:

  1. Housing;
  2. Wire for connecting to the diagram. A shielded wire from old audio equipment with 4 contacts and 1st overall shielded (Fig. 7) is suitable;
  1. Wire winding lacquered with a diameter of about 0.4 mm. You can find on old kinescopes of televisions or computer monitors;
  2. Epoxy adhesive;
  3. Super glue;
  4. Insulating tape;
  5. Foil;
  6. Threads;
  7. Varnish.

First you need a hull for the coils of the sensor. For high-quality metal detector, it is recommended to buy a ready-made ring type.

You can also make it yourself, but it will require high time and high extent of skill and intelligence.

In the purchased case, the recesses for coils of the required diameter will already be present, the output for the wire and attachment for the rod. The bar for the sensor can be made of any durable stick, PVC pipes and other dielectric material.

We wind up the outer winding, called in the future TX. We select the diameter by the body, about 20 cm. Washed winding winding clockwise on a round item of the same diameter, for example, on a cut-out foam. The winding is made by two folded wires in the amount of 30 turns.

There should be 4 outputs, of which 2 output of different wires from different sides connect each other. We firmly fix the areas of the winding with threads and cover with varnish. After drying, insulating the winding with a tape and overlook the foil from above. At the end of the winding, the foil does not connect, we leave the interval of 1-2 cm.

The foil is soldered and removing the wire, and again wind the TX coil isolate.

An internal winding, called RX, is made in the same way, but with a diameter of 2 times less. Number of turns 48. Just as in the TX coil we connect two wires.

Middle winding is called compensation or CX. We wake up a single wire counterclockwise with a single wire with the fact that it should fit into the groove with TX. Do not be insulated and do not drag this winding.

There should be three coils of the corresponding Figure 8. Fixing the coils will be made after adjusting the sensor.

Adjustment and assembly of metal detector

The following is a detailed instruction for assembling and finite adjustment of coils. For this we need oscilloscope. You can use a computer as an oscilloscope. Next to the metal detector should not be metallic items. To configure, perform 2 steps.

The first step of the setup is the leveling of the coil frequency:

Connect the TX winding according to the scheme. The wire with shielded foil is connected to the overall shielded contact of the connecting wire, and then on minus board. Turn on the device. The minus probe oscilloscope is adjusted to minus fees, and the plus to one of the conclusions of the coil. We measure and write the frequency.

In the same way, we connect the RX coil instead of the TX and measure the frequency.

RX winding frequency should be 100 Hz less than TX frequency. Regulation We carry out a parallel connection of the capacitors of 500 PF to the C1 condenser. For example, the frequency of TX and RX coils is 16500 and 15900 Hz, respectively.

Consequently, we need to lower the generator frequency for the TX coil at 500 Hz. To do this, without turning off the RX coil, we connect additional capacitors until we achieve the frequency of the RX 15400 Hz.

For convenience in the scheme, we are found all the capacitances of the capacitors and replace the capacitor with the capacity of this amount.

The second stage is balancing coils:

We settle all windings into the housing and perform a compound according to Figure 8. CX and RX is produced with a reserve for future adjustment. Minus oscilloscope connect to minus fees, and plus to the output of the C5 condenser and the RX coil. I exhibit on oscilloscope time / division of 10 ms, and Volt / division 1 V.

The setting is to achieve the minimum amplitude. We will have to constantly disappear and pinch the output of the Cx coil to reduce the number of turns. As soon as they achieved a minimum amplitude, we switch the volt / division regulator to the following less.

We repeat until it reaches the smallest amplitude value with the smallest volt / division.

After that, you can pour half the scheme with epoxy glue, leaving the CX and RX free loop free. After drying, check the amplitude of the oscilloscope again and we carry out the movement of the loop. By choosing the optimal position of the loop, we try without shifting it, fix it with super glue. And after another check, completely pour the coil with epoxy glue (Fig. 9).

The assembled sensor can also be used on metal detectors Terminator Pro, Trio Terminator and Terminator M, with proper and high-quality configuration of the circuit.

Configuring discrimination and preparation for work

To configure, turn the SA2 switch to only a non-colored metal. Ferrite cut-off point should be in the area of ​​40 - 50 com, so we set the R8 soil balance regulator to this range.

If the clipping point is in the range of 0 - 40 kΩ, add parallel to C2 container, and if 50 is 100 com - add a container to C1. The R7 discrimination control must be zero, so unscrew it to the extreme position clockwise. Move to metal detector of non-ferrous metal and ferrite.

If two signals sound for ferrite, and on the non-ferrous metal one - the windings are connected correctly, if on the contrary - change places the conclusions of the TX coil.

Next you need to adjust the visibility of all metals. For this, guided by the table in Figure 10, we move visibility from weaking metals to highly conductive selection of capacitor capacitance C1 and C2.

With a decrease in the C1, a shift is shifted to foil, and with a decrease in C2 tank - to aluminum. We achieve the visibility of all metals from the table, the visibility of copper and cut-off of ferrite under the soil balance of 40 - 50 com. Capacitor C12 produce additional adjustment.

After setting up the metal detector, Terminator 3 is released into the search area and turn on the SA1 metal detector. Approach and remove the sensor from the ground.

When the signals are submitted, gradually unscrew the ground regulator R8 counterclockwise, achieving the lack of signals for the soil, and we are convinced of copper. The successful position of the regulator is preferably marked.

The rotation of the discrimination regulator R7 counterclockwise cut the metal we do not need. Cutting occurs alternately from the foil and further, according to the table in Figure 10. The R29 sensitivity handle can increase the visibility range of metals and adjust false responses.

The SA2 switch is recommended to put all metals in mode, as it increases slightly the detection range. The SA3 switch can be turned on - only gold, which is enabled when the mode is turned on - all metals.

Since the price of non-ferrous metals and old coins is very high, then when searching in the right area you can recoup the homemade metal detector in the right time.

A source: https://zakonoma.net/metalloiskatel-svoimi-rukami/TERMINATOR-3.HTML

Metal detector Terminator 3 do it yourself

Metal detector Terminator 3 do it yourself

Terminator 3 is a metal detector for finding a coin, working on the principle of induction balance (IB) . The "Terminators" scheme was developed based on Torsto's metal detectors.

But has a number of differences, both in the work of the metal detector, and the process of its manufacture and configuration is simplified.

Also, the most advantage of the terminator is the ability to recognize the metal at the limit of sensitivity (even with a minimal seizure of the target, it detects it quite accurately).

Technical characteristics of the TERMINATOR-3 Metal Detector:

Principle of operation - IB (induction balance)

Depth of detection of objects in the ground with a coil of 240 mm:

5 rubles Russia - 22-24 cm.

5 Coperina - up to 30 cm.

Cook - up to 80 cm.

Operating frequency - 7-20 kHz (depends on the coil and capacitors C1 and C2).

Search modes - "Discrimination" and "All Metals" switches.

Soil balance - manual.

Metal detector nutrition - 9 - 12 volts.

In the picture below, the division of the LDC was separated from the Metal Detector Terminator-3.

Due to this, the Terminator is able to effectively allocate gold products among other metals.

Metal detector manufacturing "Terminator 3" with your own hands

Terminator-3 has a high level of difficulty for self-making . Therefore, the newcomer it will be extremely hard.

To collect this scheme, we recommend people who have sufficient experience in electronics and the manufacture of metal detectors! But if you feel the strength, then the process of manufacturing the "Terminator-3" will be described and all the necessary information is collected.

For the manufacture and configuration of the Metal Detector "Terminator-3" besides the standard set of equipment, You will need: Multimeter with tank measurement, oscilloscope and LC meter . But this equipment can be replaced by computer emulators, schemes and programs for which there are free on the Internet.

Metal detector Scheme Terminator-3

For the convenience of making and configuring the metal detector, you also come in handy Terminator-3 scheme, broken down to nodes :

A few versions PCB breakers for metal detector Terminator 3 You can download in this archive - the printed circuit board for the Metal Detector Terminator3 (several versions)

List of parts For making Metal detector Terminator-3 in * .doc format (for fees with SMD resistors) - List of parts for T3

We make metal detector Terminator-3 do it yourself

We make a printed circuit board. Then we go to the jumper fee, then the SMD resistors, then the panel under the chip and then the remaining parts.

Capacitors in the board must necessarily have metal floss with high thermal stability.

It is also recommended using a tester to select the most identical parts of the partition parameters on two parallel enhancement cascades and the ratings of C1 and C2 capacitors (so that everything is as identical as possible), it will greatly facilitate the setting. Also, the stroke resistor is better to use multi-turn.

After soldering the metal detector, the fee must be rinsed with alcohol, dry and visually check for defects and malp. Then without a coil can already be checked for your fee. .

Include the power to the metal detector, the sensitivity regulator is unscrewed before the permanent sound in the dynamics and touch the sensor connector with the fingers of the sensor connector, the sound should be interrupted for a second. When turned on, the LED should blink and go out.

If everything is so, then the board is fast. And you can proceed to the manufacture of the coil.

Production of coil for metal detector Terminator-3 do it yourself

Production of coil ring 200mm for metal detector Terminator-3

For its manufacture, we need winding enamel wire 0.4 mm with a diameter. We are twice in advance (so that we have 2nd and 2 starts), or we wash in parallel with 2 coils. Next, on a sheet of plywood, the circle with a diameter of 200 mm for a coil TX-transmitting coil, and 100 mm for the RX coil - the receiving coil.

https://www.youtube.com/watch?v=m91tg-hdgdc.

Then, with a step of 1 cm, we drive through the entire circumference of the carnation (preferably in the Cambridges, so as not to damage the wire insulation).

On the mandrel 200 mm, you wash 30 turns folded in two wires. Then we impregnate the coil with varnish, and after drying, we lift it with a thread. Then remove it from the mandrel and solder the middle, getting a solid winding of 60 turns. We had 2 extreme and one medium removal.

Then the coil is tightly linked by the tape, over the power of the tape with the aluminum foil for the screen, with a break of 1 cm, and on top of the foil again we wind the isolate to protect the foil. Pre-display the ends of the windings outward.

Then we wash the receiving coil on the mandrel 100mm - 48 turns, also dual wire. And then soldes.

The average output of the transmitting coil is connected to a minus on the board, to start the generator, and the middle output is only needed for setting, then it is isolated and not used.

A compensating coil shakes a single wire - 20 turns. The diameter it is selected so that it is tightly included in the shielded transmitting coil.

The cable for the coil takes 4 core in the overall screen.

Now connect the TX (transmitting coil) to the board, the middle output and the coil screen is connected to minus the board, connect the oscilloscope, the minus probe for minus the board, and the plus to one of the ends of our coil.

When setting up the coil around it should not be metallic items !!! And so connect everything and look at the oscilloscope, what frequency it turned out.

Then write the value and set the coil to the side.

Similarly, we do the RX with the receiving coil, we measure its frequency, ideally, it must be lower frequencies of TX per 100 Hz. If this is not the case, it is necessary to fit the frequency, selection of the contour capacitor. As a result, you should turn out, for example 9.1 kHz TX and 9.0 kHz Rx.

Now the average RX output is isolated, and proceed to the reduction of the coil. Connect the coils according to the scheme below.

We put the coils, in a predetermined form for the pouring epoxy resin. We take an oscilloscope, minus probe to minus fee, plus to the C5 exit, exhibit on an oscilloscope the division time of 10 ms and division 1 volt on the cell. We look at our picture on an oscilloscope, there is no balance yet, so the vertical amplitude will be large.

Then we cut one turn from the CX (compensation coil) from the side of the subpack to the RX, we bite this round and repaid. And we observe the reduction of amplitude. We produce such a procedure until the amplitude becomes zero.

Then we reduce the volt / division and continue to wind up the turns until we pride to 0 with the minimum resolution of your oscilloscope. It is clear that it will not be ideal, but you need to find, then the number of turns, after the warehouse, it will start growing again. This is the situation and there is our intermediate balance.

Now we fix the coil, with the withdrawal of CX, we make a loop of 10-15 cm, and we take it outwards to our fill, it will be our compensating loop that will help us up to bring the coil.

Sing the sensor with epoxy resin, but only half the depth of the form. Then, after the frozen, we take the oscilloscope, we begin our loop inside the shape and start to twist it and roast, trying to find the minimum amplitude value. After such a position is found, fix the loop with glue, check the balance, and fill to the end our shape.

After you have made a coil, you need to set up the discrimination scale of the terminator metal 3

Proper setting should look like in the table below

Metal detector setup methods Terminator-3 is described here - Setting the scales of discrimination of metals Terminator 3

This is how the finished homemade coil for metal detector Terminator-3 looks like

Also to Terminator 3, you can make a DD coil. Detailed Description of the manufacturer DD Coils for Metal Detector Terminator 3 - Production of DD Coils for Metal Detector Terminator

Conclusion: Terminator 3 Although quite complicated in the manufacture and configuration, and will require some effort from you.

But neatly and correctly assembled metal detector will delight you with the quality of your work and pleasant finds, the Terminator three will work as equal to the branded metal detectors of the average price category, and besides your work, will require low material costs.

For the development of the Metal Detector Terminator-3, thank the following people: A2111105, Yatogan, Radiogubitel, Electric MD4U.ru forum

When writing this material, data from sites were used:

  • Radioskot.ru.
  • cxem.net
  • MD4U.ru.

A source: http://www.miriskateley.com/metalloiskatel-Terminator-3-svoimi-rukami

Metal detector T3.

Terminator 3 is an IB metal detector with discrimination and very good indicators! The main thing that is not complicated in the setting and does not contain microcontrollers. According to the reduced scheme, the main unit blocks can be seen.

1. Power supply. I advise him to check it up before installing the chip. When assembling the device without microcircuits and without coils, turn on the metal detector to check. Do not forget about the current, if it is very small and voltages correspond to 6 and 4 volts, then you can go on! 2. Sound generator.

First I advise you to put the MC3 chip and supply food - you will hear the tone that will delight you when the purpose is detected by the metal detector. The tone can be changed like C13 and resistors P14-15 3. HF generator. The main unit that creates an emitted magnetic field that will be taken reflected from the target. four.

Reception amplifier. From the name is clear the functionality and importance of this node. 5. Synchronizer. The key on the microcircuit 4066. 6. Strengthening channels. If the device is collecting for yourself, pay attention to the selection of parts for the symmetry of the channels.

The filter and the discharge warning device will not pay attention - these are not the main blocks.

A clearer image of the MD T3 circuit and a circuit board drawings for ordinary radio components and SMD, you will find on the forum.

Collecting the metal detector Terminator 3, having conducted a primary testing of the performance of the power supply and a sound generator, install chips and turn on, measuring the current without sound and coils.

It can range from 10 to 30 mA, and with sound up to 50 mA. The current should not exceed these indicators if all nominal details are observed.

Check at this stage, the metal detector can be put on 0K, P8 (BG) knobs per 100K and the R39 resistor (feelings) to set the sound on the threshold of the breakdown. Touch the finger to Px or C5 and the sound must lie in a briefly or disappear.

Now we wind the coil. I prefer the sensor of DD - it is easier to customize it and do not need a coil - simple and convenient! First did this template:

Not a tricky thing But allows you to massively repeat the coils and achieve the identity of the semi-colts. To make such a template you need the base and material for the carcass itself. After, cut out the pattern, we make a break-down approximately 1 cm for the convenience of removing the coil and rubbing at the base - as about 1 or 2 centimeters.

As a conductor (let's call it), I use electrical brackets that break through the plinth wire No. 6, we stick them around the perimeter on the thermocons - the strength is enough! Motat the coil with a wire of 0.4mm into two wires of 30-35 turns. After dragging the screeds. And remove, tightening threads, clean the screed.

After you drag a thin scotch, we make a screen from aluminum scotch without a gap, but with outbreak. And in order to avoid a short-circuited turn, in the place of Fleece, we wake the scotch so that there would be no touch of foil among themselves. We are soldered to aluminum scotch, to wrap a mezzanine! You can still with a layer of scotch for sealing the sensor.

Then we wind fiberglass and in the form of fill. The form make in foam. To configure the discrimination of the T3 metal detector, it is preliminarily necessary to prepare targets - copper (only not textolite copped), ferrite, also a piece of foil cigarette, aluminum plug and if possible - coins. Now setting.

Everything starts with the sensor settings to the frequency. We connect the first coil to the generator with the C1 tank and we look at the frequency (remember if it is necessary to lower or increase the additional container). After we take the second coil and connect to the generator with the C2 container and cautious the frequency at a hundred hertz below the frequency of the first and it will be with us PC.

After connecting the coil to MD to its places and bringing them in 0 measuring amplitude on C5. Resistors BG = 100K, discrimination = 0, the switch is only color in mode and begin to customize the LDD scale. We take a piece of ferrite and spend over the sensor - if there is no signal, then add a tx capacitance, if there is 30-40 kΩ bg on PC.

Make sure that the sensors are connected correctly over the sensor with ferrite and copper, one signal for copper, for ferrite - double tone. Then everything written above will work.

Each of us when setting up a metal detector encountered, or it will make it, with the need to adjust the metal detector, or rather the coil for it to the desired frequency. Who has a frequency meter, the inductance meter and the oscilloscope, in principle can cope without the prefix recommended further.

If there are no special services - we make a simple device that turns the PC to the meter. All you need for its assembly is a connector, 4 resistors on 10 com. Jack into the sound card of your computer.

So, we are looking for the connector, it is desirable that it coincides with the fact that in the future it will be placed on the housing of your MD (you can connect coils to our device to directly). I took a two-name audio video Jack from the TV (such available on video recorders, game consoles (dandy) and audio magnetophones).

Gently dropped it, took a small piece of Gheetynaks, drilled holes under Jackie in it, fell. Next, we turn to the markup - separated from the total mass (the fact that inside the tulip) contact pads and the resistor 10 kΩ soldered.

At the other end, the board cut out 4 separate fives, the remaining conclusions of the resistors soldered. Here we have a small fee. In the covers found two unnecessary wires (they remained from some amplifier), at one end, Jack - on another 2 tulip (Jack Stereo).

The tulips cut off the ends turned around, the screens soldered to the mass, the central veins on their heels on the board. We subscribe where what channel on the board is near the connectors (we check the mass tester is the edge, the first channel is a tip, the second channel is a middle).

The finished device is connected to the computer, one Jack on the line in the other - Line Out. The main task further becomes the use of software. I use the SpecLab, Oscilloscope program, Audiotester v1.4e (programs are on the site in the section).

We connect the coil to the board as it should be connected to the MD, to the mode of lead from Line Out and put the program with the generator. For work I use two programs:

1. Audiotester v1.4g (generator of any shape, two-beam oscilloscope, spectrum analyzer).

2. Spectralab v4.32.13 (frequency meter, spectrum analyzer, phazometer).

These programs work up to 44 kHz, but they are enough to work with the metal detector with interest. Now break down to the configuration. This setting is suitable for any MD, including the terminator we collected, but here will be described in relation to the VolkStrum-SM scheme. First we measure the frequency (Spectralab): on U4B / 12,13 - there must be 8192 Hz (if it differs slightly - write the value). one.

R23 resistor Install vertically and "biting" a conductor connecting it with U4/1. Now fasten the coil so that there is no metal approximately one meter. Turn on the Audiotester program (generator) and connect it to R23, and the multimeter on the jp4 connector. By changing the generator frequency (in the program), we find resonance for max. voltage at the multimeter.

Selecting the exact value of the container installed on the coil, (adding fine containers), we achieve resonance to 8192 Hz (or on the recorded value). Insert the receiving coil into the jp4 connector and repeat the setting on it. 2. We restore the R23 gap and connect the coil into your regular places.

We connect Audiotester (oscilloscope mode) to U1A / 1 and moving the TX coil to achieve minimal readings. Fix the TX coil and repeat item 1. After several passes, you fix the position of the TX coil. Pour it with its epoxy resin and connect the average output to the TX cable.

We measure the values ​​of selected containers on each coil and replace them, if possible, for single containers with a small TKE. Capacities are obtained in the area of ​​0.06 microf. We glue plastic corners, for mounting the rod and cut extra pieces on the base.

Remove the coil on the pure metal of the soil. We put the reel to the ground, connect the multimeter to U1B / 7 and moving coins, we achieve a minimum of readings. After that, glue the coins to the base of the "moment" glue.

Now the coil can be packaged in the "case", and / or pour foam everything that is possible. It is necessary to remind you that there should be no metal parts in the construction of the coils.

And on the forum there are the most new modifications of the device and detailed recommendations for configuring it.

Share useful information with friends:

A source: http://elwo.ru/publ/skhemy_metallodetektorov/metalloiskatel_t3/21-1-0-495

Metal detector "Terminator 3"

Metal detector

Easy in assembly and adjustment, on a row with enviable sensitivity.

The device showed itself from the best side, discrimination at a high level-linearly removes the entire scale of the LCA, the small current consumption of the device, low cost and availability of parts, as well as the ability to work on heavy soils (very easy to rebuild from the soil), all done (T3) excellent BBOB for mid-level search engines. We make such a device and make sure that you. The device is tested and works with a bang.

Modes of operation: - Dynamic search for all metals

- discrimination without threshold background

Specifications: -Pricyp action inductionally balanced-processing frequency, kHz 8-10kHz-work work Dynamic -Preverable detection (PIN-Point) No | Sensitivity level 9-12

-Regulener of the threshold tone is - Operation from the soil there is (manual)

Depth of air detection with DD-250mm sensor -montes 25mm - about 35cm-ring gold - 30cm -Kask 100-120cm - maximum depth 150cm

-The consumption: -Bez sound about 35 mA

Metal detector scheme

The scheme almost does not require adjustments, but this "almost" is true if you have collected a fee without using a flux, but only a rosin in alcohol. Also the soldering should be neat, there should be no clamps and dumps, after assembling fee be sure to rinse with alcohol.

Parts

The assembly is starting from the spit 16 of the jumpers, then the resistors are accuracy in accuracy, then the panels under the chip and everything else.

Variable resistor The threshold regulator is better to take a multi-turn (more comfortable setting) But you can do it and ordinary, in this case it is necessary to turn it anyimate, slightly twisted and the device is not stable, did not feed and the Chuja has fallen very much, in other words you get used to you and the setting becomes not difficult . I give a photo of fees with resistors and bonding components.

Board is ready to insert into the case. The MC10 chip and its strapping can not be installed, this is the indicator of the discharge of the battery, it is expensive.

Manufacturing coil

The DD-manufactured sensor is manufactured by the same principle as for all balans, so I will dwell only on the required parameters. TX - the transmitting coil and Rx is a receiving coil.

Number of turns: 30 turns with a wire folded twice the diameter of the wire: 0.4 Enameled winding and transmitting and receiving coils dangled by a double wire (that is, 4 end of the wire should be obtained), we determine the shoulders of the windings and combine the beginning of one shoulder with the end of the other, it turns out The average conclusion of the coil.

The average TX output is connected to a minus board (without this there will be no generator launch), the average RX output is only needed for setting up frequency, after setting in frequency (resonance), it is insulated and the receiving coil turns into a normal (without output).

The admission for configuration is connected instead of transmitting and configured at 100Hz-150Hz below the transmitting. Balance reduction is carried out by shifting coils (both on wedding rings) relative to each other. The balance must be within 20-30mv but not higher than 100mV.

The coils after the winding are tightly diminished with threads, soaked with varnish.

After drying, it is tightly diminished with a tape over the entire circumference. From above is shielded by foil, between the end and the beginning of the foil should be uncovered clearance 1cm, in order to avoid a short-circuited turn.

Each of the coils is configured in frequency separately, there should be no metallic objects nearby !!! The coils can be shielded by graphite, for this 1: 1 I interfere with the graphite with nitro varnish and cover the uniform layer on top of the tinted copper 0.4 wires watched on the coil (without gaps), we connect the wire to the housing.

Another small recommendation is now regarding the manufacture of the device's fee. It is very desirable to have a tester that can measure the capacitance capacitors.

The fact is that in the device two identical gain channels, on this and the strengthening of them should go as the same as possible, and for this it is desirable to choose those details that are repeated at each stage of strengthening so that they have the most than the same parameters to measure the tester (that is, what Indications in a specific cascade on one channel - the same testimony on the same stage and in another channel), as well as it is desirable to choose with the same testimony for the testura and contour condenses C1 and C2, this will greatly facilitate your device setting.

In my sector instead of C1.1 and C1.2 (contour condenses of TX), only one congregation (C1) is set, the frequency on which the entire device will work, will not necessarily be attributed to that nominal kondor, which is indicated on Scheme.

For example, I put C1 on the TC capacity of 100 Nov, and C2 on the RX I put 100 NF + 3,3GF, and at the same time I turn out the operating frequency of the device 10,5kHz. But you can also put other nominal ratings (that is, to increase or lower the frequency of the device, in reasonable limits of course).

The device can work from 7 kHz and up to 20 kHz. The lower the frequency - the deeper it will take the goal, but it will be worse than the discrimination for some purposes, and vice versa, the higher the frequency, less depth, but it is better to discriminate for some purposes (such as gold, for example).

According to this, I think it is better to choose as saying "Golden Mid" - this is about 10kHz - 14kHz.

The correct assembly of the board start with checking the correct power supply to all nodes. Take the scheme and tester, turn on the power on the board, and the processing with the scheme. Come on the tester for all points of the nodes where the power must be supplied. Where there should be 4 volt - it means there should be 4 volts (well, a plus minus is a few Militives), and so on for all points.

The second point: - also concerns the assembly check, unscrew the handle of the feeling to the maximum and turn on the board of the board - the speaker must make a continuous sound in the speaker, when the knob is unscrewed towards the reduction - the sound must disappear. If so, it means that the board is assembled true.

Next, they put all the handles on zero (that is: the bg handle - the ferrite is not cut, and the disc card is not carved any color, the switch is in the "color only" mode), set C5 to start 4N7, carried out ferrites over the coil (if he was heard Double beep - it means everything is fine, if the same one has shifted the ends on the TX in places), they connected the oscillage probe to the C5 output and move the coil to achieving the amplitude minimum. So the device works on which TX or RX coil is soldered additional capacitors when setting up a reaction to metals! If the ferrite is visible on the entire R8 range - then on the RX, if the ferrite is not visible on the entire R8 range - then on the TX. Folga from chocolate is on one The edge of the scale, copper on the other edge. That's why they are focusing. Everything for a reference is all the scale of the discrimination, the device should see all non-ferrous metals, all metals should be cut off when the discrimination should be cut off, it should not cut off if the device does not work Toned right

In conclusion, I want to say about the cable, it is 4 veins in the overall screen, two wires on the transmitting coil and two on the receiving screen on the body. If the sound of the device is not sufficient, then you can reduce the resistor resistance in the chain of the speaker.

List of parts for metal detectors in format. Lay.

Discuss on the forum

A source: http://redram.com.ua.

A source: http://shemu.ru/raznoe/329-Terminator--3.

Talk about the homemade metal detector "Terminator 3" and other models

Hello everyone, today we will try to figure out what kind of metal detector is the Terminator? I heard probably about such a device? In particular, one of the popular models is the third. I have a friend with whom we met in the internet thanks to our hobby, has a "term" and that's what he told me about this device.

The photo in the internet is full, all different modifications:

Normal "Troika":

Model "Terminator M":

Well, another photo at once two homemade:

The first and most important thing is the homemade metal detector, it means that ordinary people make it, or rather those who are cool to understand the circuits and electronics. If you are not "Sharic" in this, then you will not do it yourself.

Make it according to the schemes that are on the Internet a pond of a pride. The most important thing is that the nuances here is a lot and every "developer" makes the device under itself - something changes, improves, adapts. Here is the general scheme - it is guaranteed to collect this MD itself:

But this is what the board looks like, where everything is fastned:

The "Terma" has several varieties - here you can talk about the model "Trio", it is improved, some stamps are added, which make the search more convenient and more comfortable. In Trio, there are already 2-tonal identification and compared with older models they are more convenient to search.

The model "Terminator-4" - is already considered obsolete, but those who started with it, respond about this model warmly and continue to use it. She was "invented" in 2007, while Troika is already 2009.

Troika and the Four - the devices are monophonic most often (however, both two-tone models began to collect), but "Trio" - already 2-tonal. So if you decide to buy "Termics", then it is better to take a danguon model.

Still, when there is no display, which helps in a kope, and it is necessary to navigate the sound, then the more tones - the better.

And here, one-photon self-containers, of course, lose with factory devices, which have several default tones.

Increase the depth of detection from the metal detector

There are also more models Pro and a recent novelty - 2012. There will be no talk about them here, for for the price they are already comparable to professional-level devices.

Next - some popular newcomers and answers to them:

As we see, it is MD from almost one price category, the third "term" on thematic forums can be bought for 4-5 thousand rubles. Whereas 250 ICQ costs 2 times more than a minimum.

However, at such a low price at the depth of "Termik" makes Asya, he sees color goals deeper. Of course, if everything is competently configured and the operator shake.

On the other hand, the convenience and informativeness of ICQ is an order of magnitude higher and if you are a complete newcomer in a kope, I would advise you to take a better factory device. And ICQ is still tested by time - a decent initial level apparatus.

The actual question, for now they have already done to put DD-coils on them and without Pina, you have to dig huge pits and even the search technology, when you spend in the goal of crosswise, does not help. We answer - Pinpoinera is not, and therefore we recommend buying an inexpensive manual pin from this list.

The design of this MD is such that he sees the "smallest" just perfectly and easily deals with all the initial level devices - graters and ICQ. Again, we will remind you to master this device from the very beginning will be difficult.

Here the answer suggests itself - most often discussed this model on the forums dedicated to the cop in the war (in particular, Reibert), and therefore use it for this purpose.

They dig the sleeves, helmets, shutters from rifles and other interesting things for war seekers.

However, the peoples of antiquities, using these devices, put it above ICQ 250 and 34 of the Minelela graters primarily at the depth of detection.

Most often compared with the devices of the same level - in particular, with MD "Cardinal Profi" from the office "Sturlab". However, as the diggers, "termik" are noticed, less glitches (Cardinal often begins, if waving a coil on Rosy grass). Well, I also note that nutrition is enough for a long time.

Color signal ACE 250 on rusty iron.

In general, after communicating with Camrad, I got the impression that the device is actually very worthy, well, it is not for nothing that he has so many fans and worship. Plus it is actively improving, adding all new chips.

And now I have already seen on sale pretty "tricky" metal detectors with a comfortable panel and a pleasant design.

And on the characteristics there they declare that they compete with minorbian medium and top detectors - 705 graters and exposures. So this MD is worth paying attention to.

Well, if you are friends with a soldering iron and shake in any diagrams and transistors - then you can try to collect it with your own hands? The benefit of the schemes in the internet are full, and a lot of thematic forums.

Well, finally, the video of the corop with the "Term-4" - the quality is so-so, but what finds and most importantly - a new, lyrical song about diggers. I advise you to see even purely because of it. Well, it is clearly seen that with this MD it is quite possible to dig ancient coins.

It seems that other signals simply do not have, alone coin) and there are no false, too, which indicates good stagnation from the soil and overall tuning the device.

But the test width about the model "Trio" - there is already more fun and clearer:

A source: http://kopano.ru/o-metalloiskatelyah/pogovorim-o-samodelnom-metalloiskatele-teminator-3-i-drugih-modelyah/

Terminator3.

It does not attend the land of Russian talents. It does not look at and different interesting things for archaeologists of lovers of different nominal value. And when the talent and hobbies of instrument search are connected in one person, not only a person with a shovel and metal detector can be obtained at the exit, but also the metal detector itself.

One of these devices is the Terminator. Members of the forum MD4U Komrada Yatogan and Radiogubitel also took part in the race. Several modifications were made, bumps are naked, tons of land are dug. As a result, the experience was born - the son of difficult mistakes, and the metal detector Terminator 3.

Specifications MD Terminator 3

Terminator, like another self-made metal detector, Quasar ARM. , Built on the principle of IB - induction balance. It can be said that Bi is also a VLF, for the frequency is about the same. At MD Terminator The frequency is 7-20 kHz - depends on the scheme and coil.

Terminator3.

The digit in the terminator does not even smell, the device is completely analog. The scheme provides for two modes of operation - all metals or discrimination.

Read also: pirate: how to assemble with your own hands, settings, characteristics and reviews of owners

Depth of detection

Properly assembled metal detector has quite good for stick-copal characteristics in depth. With a 10-inch round coil must detect items at depths:

  • Modern five-bookvik Russia - 22-24 cm;
  • Catherine 5 kopecks - 30 cm;
  • Casque - 80 cm.

Does not affect the imagination, but, given the penny cost of the device, promises an excellent price / performance ratio.

Discrimination

A rare analog device boasts the presence of filters. So the Terminator 3 notch is missing, and the discriminator in the extreme right position should exclude everything except copper.

Terminator3.

Balance of soil

Turning terminator 3 from soil is done manually. One of the potentiometers is designed for this. We will tell about the techniques and settings below.

Production of MDT 3 do it yourself

Radio Piters from the MD4U forum mark the high complexity of the manufacture of the device, and specifically, placing board. Therefore, if the reader does not feel his hands quite straight, it can purchase a fee assembly. On the Internet there are offers from 700 Russian rubles.

For those who are not afraid of the soldering iron, we offer a brief instructions for assembling the metal detector Terminator 3 with your own hands. Not even instructions, but rather a description.

MDT scheme 3.

SHEMA_TERMINATOR3.

The figure shows a schematic diagram of a 3 terminator. For a detailed description, it is better to go to the site The world of seekers . On the page there is a archive with different schemes of schemes - if experience allows you to choose from.

In the same place the list of parts.

Making a circuit board

So, the wiring board is chosen. We print it on paper, taking into account M 1: 1, we stick to the workpiece for the board, we plan space for holes. Draw tracks with varnish or permanent marker, drill holes and crucible fees. The main thing is to rinse carefully after etching and correctly fill the paths with Tin.

Plata_Terminator3.

Actually, if it were not for tight installation and a fairly large number of parts and tracks, there would be nothing special in the manufacture of the terminator.

Assembling the scheme and selection of parts

List of parts in .doc format Take from the same page The world of seekers . We purchase and proceed to the assembly.

It is necessary to freeze and choose the details for two cascades of strengthening as close as possible by parameters. Condensors C1 and C2 must have identical or close to identical capacity. We measure everything toolfully.

Plata_Terminator3.

The installation order is:

  1. Jumpers.
  2. SMD resistors.
  3. Panels under chips.
  4. The remaining details.

Read also: MD 4030: review, technical characteristics, tests and videos from fields

Components of the MDT 3 sensor parts

Sensor - coil with two windings. The IB metal detector requires two antennas - transmitting and receiving. Both are located in one case, concentrically.

To wind the coil, the following components are needed:

  1. Enamel wire 0.4 mm winding.
  2. Coil body with an external diameter of 210 mm.

katushka_terminator3.

Two windings are dulling - with a diameter of 200 mm and a diameter of 100 mm. External - TX, internal - RX. About how to wind the coil and collect it into a single constructive, described everything on the same page of the world of seekers.

Terminator assembly 3.

When all the details are dispersed, the vacuum of the washing with alcohol, and the coil is wound, you can connect power, make sure that the device is working and complete the assembly - put the board in the appropriate case, output indicators and potentiometers outward, to organize a power connection 9-12 V. usually take the crown.

Terminator3.

Adjustment and preparation for work

The first thing after everything is completed, the frequency of coils is leveling. The frequency of the outer should be about 100 Hz is higher than that of the inner. Adjustment is carried out by turning on the capacitors per 500 picofarad parallel to C1 until we obtain the desired characteristic. Then they change the garland of capacitors to one or two total capacity.

In order not to unwind in the intricacies of balancing coils, the editorial will send the reader to the page Terminator 3 do it yourself: detailed instructions . The fact that the coil should be balanced, doubt is not subject to.

Read also: Minelab Go Find 20: Specifications, Opportunities, Copy Video and Ownership Reviews

Configuration of discrimination

Detailed instructions for setting up a discriminator are on the same page Terminator 3 with your own hands: detailed instructions. The editors will only give a brief algorithm.

  1. SA2 switch to "only colored metal".
  2. Soil balance regulator put in 40-50 com.
  3. By adding the capacities or to C1, or to C2, adjust the cut-off point of ferrite.
  4. We select the C1 and C2 containers for all metals by the table shown on the page.

Terminator3.

Checking the instrument board

If everything is assembled true, but nothing works, you can try to mount on the factory board. It can be bought on the page TERMINATOR TRIO, TERMINATOR TRIO fee Board, list of parts, scheme .

A board with a false speaker is checked for performance even without a coil in 3 simple steps.

For this:

  1. Connect the battery. The LED must blink and no longer light up until the next power is turned on. When the power is turned off, the LED lights up and slowly goes out.
  2. Tighten the sensitivity potentiometer to a constant background in the dynamics.
  3. Fingers touch the coil connector. The sound must be interrupted.

Battery discharge indication

The discharge indicator works like this: The LED is constantly lit, the metal detector publishes signals at equal intervals. The sensitivity of the device during sex nutrition, of course, drops sharply.

Terminator3.

Testing detection

With the method of conducting air tests, everyone is familiar. To test detection and discrimination, you need to take objects to which the device set up, detect them at a minimum distance from the coil in all metals mode. And then, rotating the discrimination potentiometer to verify that items are cut off according to the position of the handle. If this is not the case - we return to the beginning of the chapter setting up discrimination.

Read also: Aka Signum: characteristics, settings, tests and reviews

Digger tests

We look at the air and soil test. Pyatus USSR, shovel and metal detector Terminator 3. Thank Kamrad Mikhail Smolev for the video.

Channel Pressureficerker Numismat has published a video - a test for separating the goals of the metal detector Terminator 3. We look, make conclusions. Gray soldering iron.

Features repair

If the treastery itself made a metal detector himself, then he accepted the warranty obligations on him. And himself carries a control unit for any repairs. Rods and coils are equally concerned.

Purchased block - it is necessary to watch here. Usually a good seller offers accompaniment - warranty and post-warranty. In consultation, the self-relocine, who decided to earn money on the petrolery production of metal detectors, is unlikely to refuse. A familiar Kulibin by his consultation will replace the Detail for his consultation or will change to a more appropriate one.

Terminator3.

Operational repair on a kope is the same for all metal detectors. Motchkin Blue Isol to carry with them unimportantly, and the benefit of it is a whole car. It is possible to climb the coil for the broken ears to the rod, and the barbell itself will combine with a stick, branches, fishing rods - if only the non-conductive material was.

Read also: Fisher F75: a detailed overview, comparison with other models, video from fields and reviews of owners

Examples of finds

Fucking cameras with the Terminator. Once - color signal. Two - a shovel in your hands, urgently dig. Three - money of 1738. Great coin, excellent find.

So the video of the already familiar canal is the treasure detector of numismism.

There is an opinion that other finds will refuse. We look. This is despite the fact that the modern Ukrainian coins-hikers Kamrad do not consider the find. Kamrad Mikhal Smolev also did not let down. Not only has accumulated a good jemy coin - tips and empire, horseback, a gold earring, he also told about the settings in his video. We look.

Comparison with other models

If you compare with other homemade, then Terminator 3 is a much more advanced device than Koschey or Pirate . But loses digital Quasar Arm. In terms of performance, in depth, by convenience.

Collect this device is much more complicated than all three above, it also needs to be understood.

From serial ideologically close to the terminator Metal detectors Tesoro. - ONLY OLDCHL, ONLY HARDKOR.

We look at the comparison of the terminator with a cooler - Minelab X-Terra 705 . Kamrad Andrei Kozinsky was confused, made the right test stand and tested the beam of terminators. Spoiler: Not always a branded device turned out to be better.

Profi from the Channel Original Metal Detectors held an honest test - comparison with the 400th ICQ - Garrett Ace 400i. i. Judging by the number of dyslaikov, the owners of the garret attacks offended by the test. We look.

Ownership reviews

Kvirit Kamrad's device owner from the Kirov forum of the treasurizers responds about the Terminator as follows: Simple, like a bulldozer and reliable, like Kalashnikov. In comparison with ICQs, graves and blasphemes, the Terminator showed himself, according to Camrad, very worthy, often taking confidently that the rest only barely fisted.

Probably such a review is expensive. Unlike the Terminator itself, which can be bought without biting. Prices for the finished device start from 3000 rubles.

Right choice, corrades! As well as hot soldering iron and clean printed circuit boards. Take care of yourself!

Read also: Minelab Equinox 800: features, settings, parameters, examples of finds and comparison with other models

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Metal detector Terminator-3
Gopik Date: Tuesday, 08/16/2016, 11:36 | # 1 message

Knight

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Metal detector Terminator-3

The balance sheet metal detector proposed for assembly has a number of indisputable advantages among many homemade devices of this schematics (IB detectors). Construction developed by Yatogan (Yatogan, MD4U Forum) and Radiogubitel, MD4U forum) has a scheme engine similar to the instruments of the famous Tesoro company, but much more Easy in the setting. The impetus to the spread of this development was the printed circuit boards (with modifications and improvements) of another self-delicate - A2111105 (MD4U forum, soldering iron forum). Unfortunately, I do not know the names and the names of these guys, but I want to express their gratitude for their work and the effort from all users and guests of our forum! Now I have been involved in the assembly of this metal detector under the order, and it seems everything goes smoothly. But I remember those times when I collected this device for the first time for two months. On the forums help with reluctance, often sending you to reread thousands of forum pages, motivating this by the fact that the answer to your question is already somewhere, and it is highlighted in the anals of verbal overhang. And even if we take into account that everything has long been checked and faced, newcomers almost always have difficulties with the assembly of this device. In this topic, I tried to somehow collect all the best in a bunch, and to systematize what is written on thousands of pages, and in advance to provide those subtleties of the assembly, and the questions that may arise because they arose with me. If you collect this device as it is described below - then it will undoubtedly earn you, and will please you with new finds .So I will give some characteristics of the device: Nutrition 9-12 V. Consumption from 18 to 40mm, depending on the assembly. Depth of detection - 5 kopecks of the USSR - 22 - 24 cm; Ekaterininsky Pyint - 27 - 30cm; Casque - about 80cm. Immediately make a reservation that these are standard stated parameters for this device. There are cases when the radio amateurs have sought a sensitivity of 60cm on a plot (by air), but such features require a texual selection of parts and components, which increases the cost of assembly and adjust the instrument. But even with the stated parameters, this metal detector in its search characteristics is located next to the metal detector as Garrett ACE 350, and even exceeds it for some characteristics. However, if you consider the cost of our device ($ 150-200 if you buy it) иGarrett ACE 350 - $ 450, then undoubtedly preference here in favor of the terminator. I want to say a little about discrimination: if in other devices of this class there is a certain threshold of discrimination when the target is detected (i.e., the device sees an object at the depth of the limit detection, but cannot recognize the type of metal), then in the Terminator, this deficiency is practically absent - the device recognizes Most objects at the limiting depth of detection. The press will make a reservation - the assembly and commissioning of this IB device will be almost impossible for users who are just starting their way in the development of radio electronics, and experienced electrics can make errors. But not everything is so sad - you just need to properly prepare and not rush. Firstly - for assembling and adjusting the device, we will need such devices as a multimeter, oscilloscope, LC meter (for selecting elements according to identical characteristics on both metal detector channels), you can also need a generator and frequency meter. Of course, such a set of devices cost a lot of money, and not every self-delicate to purchase it, but you can try to create a virtual measuring complex based on a personal computer. The benefit that the Internet has a bunch of useful programs for these purposes. Finally, one important remark for beginners - if you are not sure about your abilities, it is better not to take it to collect it yourself, but order a ready-made fee with Katuha. Next, we give the base diagram of the metal detector Terminator 3. Terminator3 - One-photon metal detector for Princeda IB. Simple as three kopecks and reliable as a bulldozer. This is a pure coinnik with a simple refinement, which allows you to search for gold on the beach ignoring most of the color debris. Although T3 and the coinnik, it can also be used to search for war and for collecting metal. But for this, it is necessary to enter the "all metals" mode (as stipulated in the circuit and on the board) initially the scheme was without this mode. It is performed with non-standard use of logic as an OU. Minus is that unknown to Cami Microus (therefore To averaged Mikruch's parameters, the cascades are stearalennene), well, the noise level is higher. To apply the aqueous logic in this scheme - it is possible, but it is not necessary, since the parameter variation will be even more. For the settings of the metal detector, we suggest to consider the scheme by nodes: 1. Powerbord - Naval nodes of the 6B and 4B voltage circuit nodes, which we have at its output. 2. Autogenerator - produces current fluctuations when you connect the transmitting coil to it (hereinafter TX) .3. Sound generator - gives the sound that we will I hear when we go to the cop.4. Signal amplifier - performs a pre-enhancing signal from the receiving coil (in the future RX) .5.Synchodettector - synchronizes the generated and accepted signals, due to which in principle we have discrimination. 6. Strengthening Accepted synchronized signal. 7. Commwator - MC8.8 microcircuit. Filter for nutrition.9. Battery discharge indicator. From my own experience, I will immediately say that p8.filter for nutrition, and p9. Battery discharge indicator from the scheme is preferably eliminated. First - so you can "reduce it" your device eliminating some details from it. And secondly (and this is probably the main thing), many who collected this device, noticed that these two nodes give different kinds of parasitic interference, and many radio amateurs strongly recommend them. Metal detector assembly is carried out on the circuit board. Below is shown by me, the working version of the board on the DIP components. Also, several variants of printed circuit boards for DIP or SMD you can Download in the attached archive. Collect the metal detector I advise in blocks. Before installing the part on the fee - check with the diagram. Collected the block - checked ... if it works, proceed to the assembly of the next, if not, look for a jamb in the assembled block. With this approach, it is less likely to get confused and an accumulation ... Start the board assembly from the power supply. Set all parts to the fee in accordance with the scheme. Serve me and check out what you have at the exit. There must be 4 and 6 (plus minus tenths) volts at the appropriate points. If everything is so go to the assembly of the next block. According to the power supply - I can make two comments. The first: MC9 chip KR1170EN6 can be successfully replaced by CR142En5B or any other than 6 volts output, for example, import type 7806. It is easier to get it ... and second: condensers (electrolytic or tantalum) C34, C35, C37, C38 - set than Moreover, it is better, but controversial with brains so that when they are installed on the fee they do not interfere with the rest of the details. Instead of C37, C38 - you can put one on 1000mkf and more. If you are planning to feed the device from 12 volts - then the C34 condenser replace to the corresponding voltage. It can be delivered and smaller capacity, such as 470mkf, but by voltage at least 16 volts. The next block is the sound generator. Here everything is simple, one microcircuit (MC3 HEF 4069UBP) with strapping and transistor VT4 BC517. On the remarks block several ... Firstly, the MC3 chip can be replaced with CD4069 ... HCF 4069 ... and even on the Soviet analog of KR1561LN4. This chip can be put on the panel. (All other instrument chips on the panels are undesirable). And the remark on the transistor: I draw your attention to an accurate transistor of SU517, not stupidly N-P-N transistor ... It is composite, Ie consists of two transistors in one case, and you will not replace it with any transistor. You can certainly collect analogue of two - but note that this is not provided on the board ... connect the power ... Measure the voltage to 7 and 14 of the chips ... Throw the speaker to the sixth leg (through the condenser) - there must be sound .. . If so then the unit works. Go to the next block. The next block is the generator. Here we have a simple scheme of the autogenerator, which generates oscillations at its own circuit frequency. Everything is simple here ... Transistors - You can use any r-N-r ... CT3107 will go, and even KT361 If you get able to be able ... I put KT209 and everything works fine ... Comments will be like this: condensers above 1000 PF (1N ) We put the film, below 1n - any. I even put the vintage tubular, from the vintage tanks. According to the contour - it is not necessary to put two capacitor sequentially (as in the second scheme), I put one to the extreme conclusions of the cathoo (like on the upper scheme), the average conclusion is to minus (on Earth). So easier ... Condenters C10 C11, and R10 R11 resistors need to be blown by a multimeter and choose so that they are the same, or in extreme cases, the dispersion between their rates should be as little as possible. It depends on how your metal detector will work. Essley will be a big difference - then the metal detector will work crookedly, there will be problems with setting, and in the future with a discrimination and with sensitivity. It is very easy to check the generator for performance ... Connect any coil, and poke the oscillating in turn at 10 (point A) and 4 (point c) The legs of the microcircuit MC1 ... must be a signal. At this stage - its frequency is not important to us, while we check the generator performance. If you do not have an oscillator - then the operation of the generator can be checked using a stringent, which can also be exhaled from any old TV. The high-voltage winding solder the neon light bulb, and the three outputs of the low-voltage winding are soldered to the diagram, the average output to minus, the extreme conclusions 1 and 2 - without a difference where the generator transistors collectors .... When powering, neonochka should light up ... if so - The generator works if the light is not lit - we are looking for a jamb, snap, unlike, on the board ...
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As an alternative - Cordial CMK 422 ... the same, only imported and other color ... and more expensive, respectively, three times ...
Gopik Date: Tuesday, 08/23/2016, 22:08 | Message # 3.

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Production of a DD sensor DD type sensor manufacture and configure easier than ring. I advise you to read the predictive post (if you didn't do it) to have a minimal idea of ​​what will have to do ... there I described some moments in more detail, and in this post I will not be very repeated ... except just a little bit ... it is done like this: To begin with, make a template. I did it out of a piece of foam in a thick 20mm. Drawing the circle of the desired diameter (from 150 to 300mm), in this circle, it was drawn in the diameter line (Ie. I divided the circle to 2 equal halves. Next, retreated from the line of diameter 1.5 - 2 cm to any side. We obtain 2 halves, one more, The other is less. This is the one that turned out more and will be our template ... Gently cut it out, and from the end, I swam in a circle with a scotch. This is necessary for when we shoot wound wire we did not damage the template. The wire will easily slide with Scotchi. Next step, make winding our future coil on the existing template. Motion on the same technology as the sensor ring, bifilarially, i eat twice by the wire. As mentioned above, the enamel wire must be at least 0.35mm and preferably not more 0.5mm. Ideally, 0.4-0.45mm. Motay exactly 30 turns. We had 4 end ... Tester ... We connect the beginning of one end with the connection of another ... It turns out a coil of 60 turns with a middle output. Remove neatly with Template , we solder the flexible wires to the ends, tightly linking the fine thread, align, we impregnate with an epoxitka without fanatism ... in the same way we wind the second half ... shielded both halves. We do not forget to leave the gap in the screen about 1 cm ... On one of the coils, the screen can be converted to the central output, it will be a TX coil. You don't need to do this on the second coil, because we need the central wire only to set up the coil, and in the future it is permanently cut off. It will be the RX coil. On this coil, you can connect the screen to one of the extreme conclusions, just do not forget to mark it, because in the future it is connected only to a minus power on the board. (If you are afraid to get confused - then print a separate wire for the screen.) Next, on top of the screen We wash both coils with tape from above ... Coils are ready. The next step set up the coils in frequency, as well as in the ring type sensor. I alternately connect the coils to the TX sequence on the board, and the oscillating (frequency) measure the frequency. Selecting the capacitors for each coil, we need to achieve the RX coil frequency to be at 100 Hz lower than the TX ... Let's remind you that the frequency can be any, in the range from 8 to 14 kilohertz. The lower the frequency - the better the buy of the device will be, and the higher the frequency - the more clear will be discriminary and the easier it will be to customize the scale of metals, but lose in chuke ... so you can choose to you, but as an optimal version I advise about 9- 10 kilohertz ... After you set up the coils in frequency, we solder the corresponding capacitors to the corresponding coils on the fee, cut the central wire from the RX root coil, and the information procedure can be started. Prepare a piece of foam, sizes for a couple of centimeters larger than the diameter of your sensor. Place the coil alone on the other with a launch of a couple of centimeters, connect the oscilloscope, and carefully moving one of the coils, achieve the amplitude at the C5 condenser exit to be minimal, within ten Millivolt. Moving half the coil must be very neat, literally in half a millimeter, because the amplitude grows and falls very sharply and you need to catch the position of halves to each other, in which there will be a minimum amplitude, and in this position to fix the second half.. The foam with a pencil ... Marker ... feed the grooves in the foam in a manual milling mill in a foam to "drown" there coil, with such a calculation so that the coil inside the groove can be moved within one or two millimeters. Place the coils in the grooves reliably fixing one of them, connect the oscillograph again, and moving the second coil again achieve a minimum amplitude. Everything ... Now the coil can be poured, just not completely. Leave an unnecessary smooth part of one of the halves. After the epoxy fully solids (24 hours), connect the oscilloscope again and check the reduction in zero. If you have left zero, it neatly deforming an unnecessary part of the halves of the coil. Correct zero finally, after which the katuhu can be poured completely and thoroughly. After a day, your katuch is ready and you can proceed to the settings of the device itself.
Gopik Date: Wednesday, 08/24/2016, 12:32 | Message # 4.

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Configure Metal Detector Terminator-3 After you have already ready-made katuhi available in the presence, the device itself remains tuned. Adjusting the device in principle is to set up the so-called "scale of metals" that your terminator will see or not see depending on your desire and needs. To do this, prepare "goals" from different metals for which you will customize the device. Objectives - should not be large, the optimal size of 1x2x2cm plus minus ... This is approximately such as a capacitor of type K50-6 500MKFX10B. It would be nice to have coins, such as the Soviet Pyatak or Tierca, such as 20 Copy of the USSR, a piece of lead, and a piece of copper shine (if there is something, you can have an Ekaterininsky Pyatkin, it is also copper). And the main goal is a piece of Ferit about the same size. Kilogram slices of ferrite and all sorts of rings there will not go. I used half the ferrite from the line transformer, broken off the side ears, although one side ear will be enough. Singing the coil to the terminator board. (Let me remind you that you need to connect a piece of shielded cable with four veins in one screen, a length of about 1 meter. The cable must be the one that will be used in the future and change its length after the settings is undesirable). We install the discrimination on zero (you can hit the jumper), BG (soil balance) per maximum ... The S2 switch set to "All Metals" (upper position). Turn on power. The "sensitivity" knob is installed on the edge of the signal breakdown. We take any colorful goal, Masha over the sensor, then take Ferit, and also Masha above the sensor. Then take any black goal - and also Masha over the sensor. Machia over the sensor does not need to be produced closely, it is done at a distance of at least 15 cm from the sensor. On colorful purposes there should be a single signal, for ferrite and on black targets (nut, bolt, pliers ...) - there must be a double signal. If you have it all right ... if on the contrary - change places on the board ends of the TX coil, we translate our device into the "non-ferrous metals" mode (the bottom according to the position scheme), and we carry out all further settings Only in this mode . You can wave for interest above the sensor with a bolt or black metal nut, your device must ignore black goals (fuzzy short clicks are allowed). We include oscilloscope and measuring the amplitude of the signal on the second leg of the MC2. Retrunitive capacitor C12 we achieve the maximum amplitude of the signal. We take a piece of Ferita, and Masha above the sensor. There may be three options here: 1 - no reaction2 - Ferith visible when the BG handle is positioned from 100 com to 0 ... 3 - Ferit is cut off at 15 kg ... and so - in order: 1. We took a piece of ferrite pushed at a distance of 15 cm above the sensor, and in response silence, then we are equipped with a soldering iron and a bunch of capacitors of 1 Nan. We take a capacitor of 1 nan we solder it parallel to the contour condenser TX (according to the scheme it is C1) and in the face of the ferrite again over the sensor if there is no reaction, it means that they are soldered by the appearance of the signal to ferrite when the P8 is about 70k.2. The second case, we took a piece of ferrite, wrapped over the sensor, there is a signal, move the handle on the 50kom, washed again and again there is a signal, move the handle on the 0k and so there is a signal. In this case, we in the hands of the soldering iron and we attack the capacitors parallel to the contour condenser Px coils (according to the scheme it is C2) to achieve that when Position P8 in the area 40-50kom, the signal disappeared. The third option is when the ferrite is cut off at that position P8 that we need. If the ferrite is cut on with 15kom, then we need to carry out actions similar to the description at number 1, and if the ferrite is cut on with the position of P8 in 80k, it is similar to the description at number 2. All these manipulations with Ferit are needed to find the point Adjusting the instrument from the soil. Ferrite in laboratory conditions conditionally replaces the soil. In fact - you can customize the BG so that Ferit cut out at 80 hours, it all depends on the soils in your area on which you will then work ... and the second - after the cut-off of the ferrite, the metal cut-off scale begins, and it must be configured in this way. So that with the further edge of the BG handle in the direction of zero, you have searched the metals in turn according to the table - starting with copper and ending with the aluminum foil (take a pack of cigarettes for the test). And so ... Now you need to achieve the entire scale of metals according to the table you have to get the BG from your Tof (belt cut-off) to zero. About It should be like this: Ferit is cut off at 80kommedia - it cuts off at 70kom ... Aluminum is taught at 60 kΩ ... Pyat of the USSR is cut off at 50 com ... The lead is cut off at 40 com ... 20kop of the USSR cuts off at 30k ... modern Walking cuts off at 20kom ... The gold ring is cut at 10kom ... The cigarette foil is cut off at 0-1k ... once again I repeat that you need to get the whole scale of metals into zero to zero, and cigarette The foil must be cut off at the minimum position of the BG handle. If the foil is cut off by 20 ... or in 30comms - it means that your scale is too narrowed, and the device will cling to ferrous metals ... you will not have a discrimination. And if you, at the position of the 0k, you say it cuts off for example, lead, or 20 kopecks of the USSR - it means that your metal scale is strongly stretched, and you cannot find gold, which is above in the metal scale. If the above problem is the above problem - then arrow the capacitors of 50 , 100, 200 and 500 Picofarad and Warm soldering iron for further manipulations. If the metal scale is ejected, then you need to increase the Capacity C5 capacitor. If your scale is stretched - then you need to reduce the capacity of this condenser. Pick the capacity of this capacitor so that the entire scale of metals can be adjusted to the BG handle, and so that the cigarette foil is cut into the position close to zero, and Ferit's cut-off point is somewhere in the 70kom area ... It is possible that after the collection of C5 condenser, you will again come Customize the cut-off point of Ferita. After all these manipulations, the device can be considered customized, attach it to the rod, put into the box and go to the real kopeck. If all of the above manipulations seem to you very complicated and you will not be able to perform them yourself - then just order the device from me. I am probably the only person in Belarus, which is engaged in the manufacture of metal detector, Terminator-3, and if we agree, I can make it for you. But if you feel that you can assemble the device yourself - let it help you lecture that I have printed here for you. Read everything carefully, make step-by-step, and at the end you will understand that everything is so difficult as it seems. According to all questions of the setup, settings, and any help in the independent manufacture of the Terminator, unsubscribe in the subject, for all issues to order - write in PM, or in contact
Gopik Date: Sunday, 08/28/2016, 21:44 | Message # 5.

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Today graduated from another order, completed work on the next terminator. Usually, before sending another order before, I test all my creatures in the field. Since I usually make terminators in a standard configuration (Katuha + fee), for tests I have a bar, which I embrace Katuchu, with a box where I am in a fee. In the laboratory conditions, the newly created terminator exceeded the stated requirements, showing the reaction 35cm on Pyatk USSR. The expected reaction in the ground is minus 8 cm ... Ie, 27 cm, which in principle for the terminator is normal. For other indicators, on the table, the device worked as it should be. And here, by putting another katucho on the barbell and putting a fee in the box, I went to the test cop. For the corop, a non-invalid field under hay, with grass in some places about 30 cm. On this field, there are dots and dumplings, there was once a line of defense, therefore there were fights, and at least some kind of bulk or a player in any case will always be there ... and in general, it seems to me that there are no such field in Belarus where there are no fights, so I think the sleeve or the cartridge can be found on any field, regardless of the having fun there ... In addition, this field is obviously there are large and small pieces of ferrous metal, (whether a fragment from the projectile or a piece of a plow from agricultural machinery), and nevertheless, granted aluminum covers from vodka and wine bottles, as well as canning cans and tin dressing covers, which left behind hardworking collective farmers And biting in the workplace ... And so ... The Test of the Metal Detector Terminator-3 is carried out on the reliability of the coil, the reaction to the soil, the stability of the device in the heat (today we have more than 30 in the shade, and full of calm ...) reaction The device N. And the movements of the cable ... to the blows of Katuha about bodies and stones ... Well ... and by itself, on the search characteristics of the device and check the scale of metals. Of course, I did not calculate the coin there, but the reaction of the device on the sleeve or cartridge can be considered an equivalent ... And so ... I wandered around the field for about one and a half hours, plus a minus 10 minutes, in my opinion the device passed the test ... to start boast finds. In the photo we see two places One of which RIA seems to me, three German cartridges, three Russians, and the Russian cartridges have chosen in the Capsule 1914, one of them is only half ... Three balls - this is a drift, most likely lead, and Whether 1812 is hard ... most likely from shells, just a bullet, and some unidentified non-ferrous metal ring, presumably spare parts from the equipment, only from which ??? Carton and cartridges - climbed at different depths, and simply poule, I dug up about the maximum. On the bayonet - the shovel did not take out, I had to deepen the pit to see what lies there. It was pleased that the metal detector at the limiting depth of detection determined the non-ferrous metal of the small size and issued a clear signal. This is one of the huge advantages of the terminators line, because industrial brand models of metal detectors are often confused by metals at the limiting depth and give out false signals. The Terminator pleased with the army blahs. Although one of them does not represent much value, but the other is quite interesting, still imperial times. She is shooting a bullet (most likely ...) and judging by the nature of the hole - silent from the inside, I eat the reached bullet from the back and passed the departure of the blossom. For all one and a half hours - Niraza did not have to be tuned from the Earth, as the first time adjusted the soil balance - so all the time and passed, the settings did not leave, the frequencies were not saved. It also very pleased. Mahal Katuha I am in different modes. At first, slowly, and when in Rush entered - it really is like oblique ... At the same time, there were no false positives with friction about the grass. So I was pleasantly surprised that there was no false positives when the lateral blows about stones and bumps, and the blows were pretty intense. For confidence - I knocked Katuha about your boots, there is no false response. The only thing I can see - there are false signals with a vertical effect on the katuchu, such as if it goes when it lies on Earth. Apparently the katuha I have a light and thin, and with vertical deformation (also quite a strong) rings on some microns are shifted relative to each other because of which the device produces a false signal. But I think that because of this is not worth the katuhu, whether someone will drive the stones in the ground, or stump along it. The main thing is that it is withstanding the side, pretty strong blows and the device does not give a false signal. Next ... There is no false response to the movement of the cable. Perhaps this is because the cable I go inside the pipe, inside my test bar with a box. When testing, I am honestly shaking a metal detector testing it for vibration. This is also pleasant pleased. Say honestly, there are false workers on large flat and rusty pieces of metal. But in my opinion, this problem has all the metal detectors even in expensive branded models. However, it is impossible to name these triggers. On such items, the metal detector reacts with uncertain dry short sounds, which differ from the reaction to clearly colored metal. Even on a bullet, which I dug up at a depth of more than 20 cm. The signal was clear, smooth, long and ringing. So it is difficult to confuse. I admit honestly, a couple of times there were signals like a chronicle, and I dug a kilogram fragment from the projectile. Apparently it matters not only the size of a large flat object, but also its geometric position in the ground relative to the katuhi. Once again, I repeat - such signals are indentible. There is one to fight diggers, these canning cans and rusty tin dressing covers from cans. Very often the device reacts to them like a non-ferrous metal. You could also call aluminum tubes from old wine bottles, and vodka. But this problem is easily solved by adjusting the device to ignore such objects. True, with one disadvantage - copper is ignored with this action ... consults only that all other objects of type 5 Copper USSR, sleeves, silver, nickel, 20kop of the USSR, lead, gold - the device continues to see. Only copper and aluminum are ignored. In general, I think the device is excellent, I think the customer will like it. For all questions of setup, settings, and any help in the independent manufacture of the Terminator, unsubscribe in the subject, on all issues of manufacturing to order - write in PM, or in contact
Gopik Date: Sunday, 09/11/2016, 13:19 | Message # 6.

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Yesterday evening got out on a cop. Neighbors dig in Kathodos, and I followed them with my terminator. Well ... why the chago accumulated ... If you do not count the three pockets of the caps from bottles, the sleeves, the horses and other Shmudryak, then the cop is again successful. Three coins of 2 kopecks of the USSRovsky times were dug, a couple of rings, a silver serving, 10 pfhenings with a swastika, and three pieces of vintage coins worthy of attention, if they were in good condition. The first coin is Nikolaka ... But unfortunately, it cuts it in a circle after leaving only the core with an eagle. So it is not possible to establish a year, and in general, it can be considered spoiled, although the retainer seems to be normal. The second coin - the Polish 5 zlotys is most likely 1937 or so something ... some kind of freak has come so that it seems to be a chisel on both sides. The coin has lost its numeratesmatic value because of this, and turned into scrap silver weighing 11.8 grams.   The third coin is 2 kopecks of Nicholas 1, 1837. The coin is certainly not in the best condition, but it's a shame that some kind of freak made a hole in it than that look like a nail. Because of this, the coin has lost its numeratesmatic value, and turned into a piece of copiers. Despite this - I think tomorrow to go and build it in the village council, all the same pieces of copper over 120 years old, and that there was no problem with the law in accordance with Decree No. 485, it is better to have it ... at the same time, it is also a reference to get it ... from sin away ...  But the most pleasant thing is that my homemade again showed excellent results and specifications. Among the whole Shmudryak, there is such a thing - as a capsule from the cartridge. If anyone is weakly posing - then it is a piece of brass of a cylindrical form about 4mm in length and 3 mm in diameter ... So, this fifflushka I hung up. She was at a depth of more bayonet shovel, Ie about 30 - 32 cm and despite this device I gave a clear signal to the flame. And yet, one very pleasant part that small goals are like this capsule, shrapnel, bullets, small coins The Terminator determines quite accurately, plus a minus 3 cm in the center of the ring ... So you can safely use the device as Pintpinter, of course if You are worth a ring type sensor.
Gopik Date: Friday, 01/06/2017, 15:58 | Message # 7.

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Homenko-Nikolay. Date: Sunday, 01/29/2017, 16:14 | Message # 8.

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Please tell me. Customized DD sensor TX 10325, RX 10216 reduced 75mV balance, why reacts to metal to a couple of melimetrahs from the coil and insisted metals.
Gopik Date: Sunday, 01/29/2017, 18:16 | Message # 9.

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Quote Homenko-Nikolay.

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Please tell me. Customized DD sensor TX 10325, RX 10216 reduced 75mV balance, why reacts to metal to a couple of melimetrahs from the coil and insisted metals.

First - 75mV - it did not bore the balance ... It was so, played. reduce so that it is as little as possible, maximum - 50 milcias, but need to within 20mv ... Secondly - in a pair of millimeters from the coil, he will see everything, so this is not an indicator ... All the tests and breaths of ferit and metals are not closer to 5 cm for Katuch ... I don't need to poke anything. Optimally 10-15 cm ...
Homenko-Nikolay. Date: Monday, 01/30/2017, 14:37 | Message # 10.

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Balance reduced to 35, the result is like was rather. It is 1cm, 5cm, 10-15 cm, no reaction.
Gopik Date: Tuesday, 02/07/2017, 22:22 | Message # 11.

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Quote Homenko-Nikolay.

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Balance reduced to 35, the result is like was rather. It is 1cm, 5cm, 10-15 cm, no reaction.

Check the quality of the soldering ... fee for unbreaks and snot ... Check the nutrition on chips ... The sensor is wound correctly ??? Wire new? Are you sure that there is no intercity closure? Do not break the katuhi screen?
V_KRAVCHENKO. Date: Wednesday, 02.22.2017, 16:14 | Message # 12.

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I did not understand a little, what is the difference between boards placed in the archive from the board shown in the lecture? Is this the same Terminator-3 scheme from Yatgana, or not?
Gopik Date: Thursday, 02/23/2017, 17:18 | Message # 13.

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Quote V_KRAVCHENKO.

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What is the difference between boards placed in the archive from the board shown in the lecture?

Yes ... the fee is the same ... only in the lecture there are tracks that were grounded according to the original scheme on the MC4 ... a little change ....
V_KRAVCHENKO. Date: Friday, 02/24/2017, 22:43 | Message # 14.

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Tell me, Lay.File and layout of elements under the selection placed in the lecture, where is it?

Added (24.02.2017, 22:43) ----------------------------------------- ---- I understand, according to the scheme, the signal from the MC8 comparator enters the point with the sound generator on the R17 resistor (1k). If the power filter is the outputs D and C, it also sits in the point D and C of the sound generator, with the D4 jumper, C40-not put, then in my opinion, this jumper is simply shunken R17 (1k). If not so, correct.

Gopik Date: Saturday, 02/25/2017, 04:57 | Message # 15.

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Quote V_KRAVCHENKO.

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If not so, correct.

Slightly almost so ... Wilter - put instead of R17 ... If you put the filter - then the resistor as according to the diagram on the filter ... If the jumper is instead of the diode, then the resistor 1k ... Lay. File and layout of elements under the sector in the archive ... it is written there - download in the attached archive before the drawing board ...

Metal detector Terminator For many years, occupies an honorable place in the ranks of self-made metal detectors. Over the years, many improvements were made, the result of which are various modifications of this instrument.

Consider the two-tonal metal detector Terminator 3 (Fig. 1), working on the principle of induction balance. In essence, this is an improved metal detector Terminator 4.

Its main features are: a small power consumption, discrimination of metals, non-ferrous metals mode, the mode is only gold and very good characteristics of the search depth, in comparison with semi-professional branded metal detectors.

With relatively small cost and time costs, anyone can collect the Metal Detector Terminator 3 with its own hands, if it is accurately guided by the detailed instructions in this article.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

Making a circuit board

The scheme is collected on the circuit board. Find on sale fee under a specific scheme problematic, so we will create it with your own efforts. Below is an accurate action plan for successful circuit board:

  1. Print the circuit board pattern (Fig. 2).

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

The size of the diagram itself should be 104 × 66 mm, so when printing, we reduce the picture to the desired dimensions. You can also download a circuit board and a program for processing and printing on the link.

Cut off the extra edges, leaving 10 mm in the reserve on each side. We buy, corresponding to the size of the scheme, foil textolite with a reserve of 10 mm on all sides. We clean the textolit of sandpaper to shine, while trying not to wipe the copper layer;

  1. We assign the pattern of the scheme on the textolit. Fix it with super glue or tape from the edges left in stock. Kerner or screwing the future holes and reveal the scheme from the textolite. We produce drilling holes in the pattern of the circuit board. For drilling, drill from 0.5 to 0.7 mm or a needle with a broken loop. We make a cutting of the textolite to the metal to the metal, you can also use other instruments;
  2. Gently, guided by the mounting scheme, put the lacquer or permanent marker of the track. We are waiting for complete drying;
  3. We carry the board. To do this, we will need 3 percentage of hydrogen peroxide, citric acid and the usual salt. In the dishes of a small size, we pour 100 ml of hydrogen peroxide. Add 30 g of citric acid and 5 g of salts. We stir up to dissolution, after which we put the textolol in the vessel. We are waiting until all copper coating on the board is dissolved. To accelerate the process, it is recommended to heat the solution and maintain its circulation with stirring or air;
  4. After taking the board, we remove the marker or varnish acetone. Wash the board with water or alcohol from the residuals of the solution. The obtained tracks are brought in a small amount of solder, trying not to spare holes for details. The board is ready for installation details.

The manufacturing process can be viewed on the video attached below.

Assembling the scheme and selection of parts

The metal detector scheme is shown in Figure 3. Guided by it and the circuit board of the circuit board, we make the board assembly.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

Details marked on an asterisk can be selected by an experimental way to improve the characteristics of the device. But to begin with, it is recommended to collect strictly according to the scheme, and experiment when you reach the device setup.

The list of parts and comments on them are listed in the table in Figure 4, and in Figure 5, the Cocoovka chip and transistors are indicated.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

The soldering is starting with connecting jumpers from radio components. To do this, use the lacquered or insulated wire of the smallest section. The jumpers are marked on the mounting scheme with simple thin lines.

On the part of the tracks we solder the SMD details - the radio elements of miniature sizes and increased thermal resistance. They are isolated yellow. Then we solder the microcircuits and the remaining parts.

For the elements of adjustment, turn on and off, changing the mode, batteries, sound and light indication - display the wires to secure these parts on the housing. For adjusting resistors we find suitable caps. Also output the connector for the sensor wire.

The sample board of the board with the connector, regulators and switches is shown in Figure 6.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

Capacitor C2.3 and SA3 switch assemble mounted mounting.

To check the performance of the collected circuit, connect the battery with a voltage of 9 V. When the device is turned on, the LED should light up and go out, as well as when it is turned off. When touching the connector for the sensor, the sound of the metal detector must stop at a small period of time.

In the maximum position of the sensitivity regulator, there must be a tonal sound, and with the minimum - missing. Do not forget to check all control voltages in the diagram. To do this, we include a constant voltage mode in the tester in the range of 20 V.

Minus probe apply to minus fees, and the plus measure the voltages on the points according to the scheme.

The housing is made from any plastic box of the desired size and is fixed on the metal detector's rod. You can use the housing from other metal detectors, such as the terminator M or Trio Terminator. We subscribe buttons and regulators in accordance with the functions performed.

With successful creation of such a scheme, you will receive a valuable experience that will need to collect the most complex metal detector with your own hands.

Components Sensor (coil) Metal detector

An important part of any metal detector is the sensor. It consists of coils in the housing, which is also searching by transmitting and receiving the signal.

To assemble the metal detector sensor, you will need the next set of components:

  1. Housing;
  2. Wire for connecting to the diagram. A shielded wire from old audio equipment with 4 contacts and 1st overall shielded (Fig. 7) is suitable;

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

  1. Wire winding lacquered with a diameter of about 0.4 mm. You can find on old kinescopes of televisions or computer monitors;
  2. Epoxy adhesive;
  3. Super glue;
  4. Insulating tape;
  5. Foil;
  6. Threads;
  7. Varnish.

First you need a hull for the coils of the sensor. For high-quality metal detector, it is recommended to buy a ready-made ring type.

You can also make it yourself, but it will require high time and high extent of skill and intelligence.

In the purchased case, the recesses for coils of the required diameter will already be present, the output for the wire and attachment for the rod. The bar for the sensor can be made of any durable stick, PVC pipes and other dielectric material.

We wind up the outer winding, called in the future TX. We select the diameter by the body, about 20 cm. Washed winding winding clockwise on a round item of the same diameter, for example, on a cut-out foam. The winding is made by two folded wires in the amount of 30 turns.

There should be 4 outputs, of which 2 output of different wires from different sides connect each other. We firmly fix the areas of the winding with threads and cover with varnish. After drying, insulating the winding with a tape and overlook the foil from above. At the end of the winding, the foil does not connect, we leave the interval of 1-2 cm.

The foil is soldered and removing the wire, and again wind the TX coil isolate.

An internal winding, called RX, is made in the same way, but with a diameter of 2 times less. Number of turns 48. Just as in the TX coil we connect two wires.

Middle winding is called compensation or CX. We wake up a single wire counterclockwise with a single wire with the fact that it should fit into the groove with TX. Do not be insulated and do not drag this winding.

There should be three coils of the corresponding Figure 8. Fixing the coils will be made after adjusting the sensor.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

Adjustment and assembly of metal detector

The following is a detailed instruction for assembling and finite adjustment of coils. For this we need oscilloscope. You can use a computer as an oscilloscope. Next to the metal detector should not be metallic items. To configure, perform 2 steps.

The first step of the setup is the leveling of the coil frequency:

Connect the TX winding according to the scheme. The wire with shielded foil is connected to the overall shielded contact of the connecting wire, and then on minus board. Turn on the device. The minus probe oscilloscope is adjusted to minus fees, and the plus to one of the conclusions of the coil. We measure and write the frequency.

In the same way, we connect the RX coil instead of the TX and measure the frequency.

RX winding frequency should be 100 Hz less than TX frequency. Regulation We carry out a parallel connection of the capacitors of 500 PF to the C1 condenser. For example, the frequency of TX and RX coils is 16500 and 15900 Hz, respectively.

Consequently, we need to lower the generator frequency for the TX coil at 500 Hz. To do this, without turning off the RX coil, we connect additional capacitors until we achieve the frequency of the RX 15400 Hz.

For convenience in the scheme, we are found all the capacitances of the capacitors and replace the capacitor with the capacity of this amount.

The second stage is balancing coils:

We settle all windings into the housing and perform a compound according to Figure 8. CX and RX is produced with a reserve for future adjustment. Minus oscilloscope connect to minus fees, and plus to the output of the C5 condenser and the RX coil. I exhibit on oscilloscope time / division of 10 ms, and Volt / division 1 V.

The setting is to achieve the minimum amplitude. We will have to constantly disappear and pinch the output of the Cx coil to reduce the number of turns. As soon as they achieved a minimum amplitude, we switch the volt / division regulator to the following less.

We repeat until it reaches the smallest amplitude value with the smallest volt / division.

After that, you can pour half the scheme with epoxy glue, leaving the CX and RX free loop free. After drying, check the amplitude of the oscilloscope again and we carry out the movement of the loop. By choosing the optimal position of the loop, we try without shifting it, fix it with super glue. And after another check, completely pour the coil with epoxy glue (Fig. 9).

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

The assembled sensor can also be used on metal detectors Terminator Pro, Trio Terminator and Terminator M, with proper and high-quality configuration of the circuit.

Configuring discrimination and preparation for work

To configure, turn the SA2 switch to only a non-colored metal. Ferrite cut-off point should be in the area of ​​40 - 50 com, so we set the R8 soil balance regulator to this range.

If the clipping point is in the range of 0 - 40 kΩ, add parallel to C2 container, and if 50 is 100 com - add a container to C1. The R7 discrimination control must be zero, so unscrew it to the extreme position clockwise. Move to metal detector of non-ferrous metal and ferrite.

If two signals sound for ferrite, and on the non-ferrous metal one - the windings are connected correctly, if on the contrary - change places the conclusions of the TX coil.

Next you need to adjust the visibility of all metals. For this, guided by the table in Figure 10, we move visibility from weaking metals to highly conductive selection of capacitor capacitance C1 and C2.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

With a decrease in the C1, a shift is shifted to foil, and with a decrease in C2 tank - to aluminum. We achieve the visibility of all metals from the table, the visibility of copper and cut-off of ferrite under the soil balance of 40 - 50 com. Capacitor C12 produce additional adjustment.

After setting up the metal detector, Terminator 3 is released into the search area and turn on the SA1 metal detector. Approach and remove the sensor from the ground.

When the signals are submitted, gradually unscrew the ground regulator R8 counterclockwise, achieving the lack of signals for the soil, and we are convinced of copper. The successful position of the regulator is preferably marked.

The rotation of the discrimination regulator R7 counterclockwise cut the metal we do not need. Cutting occurs alternately from the foil and further, according to the table in Figure 10. The R29 sensitivity handle can increase the visibility range of metals and adjust false responses.

The SA2 switch is recommended to put all metals in mode, as it increases slightly the detection range. The SA3 switch can be turned on - only gold, which is enabled when the mode is turned on - all metals.

Since the price of non-ferrous metals and old coins is very high, then when searching in the right area you can recoup the homemade metal detector in the right time.

A source: https://zakonoma.net/metalloiskatel-svoimi-rukami/TERMINATOR-3.HTML

Metal detector Terminator 3 do it yourself

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

Terminator 3 is a metal detector for finding a coin, working on the principle of induction balance (IB) . The "Terminators" scheme was developed based on Torsto's metal detectors.

But has a number of differences, both in the work of the metal detector, and the process of its manufacture and configuration is simplified.

Also, the most advantage of the terminator is the ability to recognize the metal at the limit of sensitivity (even with a minimal seizure of the target, it detects it quite accurately).

Technical characteristics of the TERMINATOR-3 Metal Detector:

  • Principle of operation - IB (induction balance)
  • Depth of detection of objects in the ground with a coil of 240 mm:
  • 5 rubles Russia - 22-24 cm.
  • 5 Coperina - up to 30 cm.
  • Cook - up to 80 cm.
  • Operating frequency - 7-20 kHz (depends on the coil and capacitors C1 and C2).
  • Search modes - "Discrimination" and "All Metals" switches.
  • Soil balance - manual.
  • Metal detector nutrition - 9 - 12 volts.
  • In the picture below, the division of the LDC was separated from the Metal Detector Terminator-3. Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions
  • Due to this, the Terminator is able to effectively allocate gold products among other metals.

Metal detector manufacturing "Terminator 3" with your own hands

Terminator-3 has a high level of difficulty for self-making . Therefore, the newcomer it will be extremely hard.

To collect this scheme, we recommend people who have sufficient experience in electronics and the manufacture of metal detectors! But if you feel the strength, then the process of manufacturing the "Terminator-3" will be described and all the necessary information is collected.

For the manufacture and configuration of the Metal Detector "Terminator-3" besides the standard set of equipment, You will need: Multimeter with tank measurement, oscilloscope and LC meter . But this equipment can be replaced by computer emulators, schemes and programs for which there are free on the Internet.

Metal detector Scheme Terminator-3

  1. Manufacturing Metal Detector Terminator-3 DIY: Detailed instructionsFor the convenience of making and configuring the metal detector, you also come in handy Terminator-3 scheme, broken down to nodes :
  2. Manufacturing Metal Detector Terminator-3 DIY: Detailed instructionsA few versions PCB breakers for metal detector Terminator 3 You can download in this archive - the printed circuit board for the Metal Detector Terminator3 (several versions)
  3. List of parts For making Metal detector Terminator-3 in * .doc format (for fees with SMD resistors) - List of parts for T3

We make metal detector Terminator-3 do it yourself

We make a printed circuit board. Then we go to the jumper fee, then the SMD resistors, then the panel under the chip and then the remaining parts.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

Capacitors in the board must necessarily have metal floss with high thermal stability.

It is also recommended using a tester to select the most identical parts of the partition parameters on two parallel enhancement cascades and the ratings of C1 and C2 capacitors (so that everything is as identical as possible), it will greatly facilitate the setting. Also, the stroke resistor is better to use multi-turn.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

After soldering the metal detector, the fee must be rinsed with alcohol, dry and visually check for defects and malp. Then without a coil can already be checked for your fee. .

Include the power to the metal detector, the sensitivity regulator is unscrewed before the permanent sound in the dynamics and touch the sensor connector with the fingers of the sensor connector, the sound should be interrupted for a second. When turned on, the LED should blink and go out.

If everything is so, then the board is fast. And you can proceed to the manufacture of the coil.

Production of coil for metal detector Terminator-3 do it yourself

Production of coil ring 200mm for metal detector Terminator-3

For its manufacture, we need winding enamel wire 0.4 mm with a diameter. We are twice in advance (so that we have 2nd and 2 starts), or we wash in parallel with 2 coils. Next, on a sheet of plywood, the circle with a diameter of 200 mm for a coil TX-transmitting coil, and 100 mm for the RX coil - the receiving coil.

Then, with a step of 1 cm, we drive through the entire circumference of the carnation (preferably in the Cambridges, so as not to damage the wire insulation).

On the mandrel 200 mm, you wash 30 turns folded in two wires. Then we impregnate the coil with varnish, and after drying, we lift it with a thread. Then remove it from the mandrel and solder the middle, getting a solid winding of 60 turns. We had 2 extreme and one medium removal.

Then the coil is tightly linked by the tape, over the power of the tape with the aluminum foil for the screen, with a break of 1 cm, and on top of the foil again we wind the isolate to protect the foil. Pre-display the ends of the windings outward.

Then we wash the receiving coil on the mandrel 100mm - 48 turns, also dual wire. And then soldes.

The average output of the transmitting coil is connected to a minus on the board, to start the generator, and the middle output is only needed for setting, then it is isolated and not used.

A compensating coil shakes a single wire - 20 turns. The diameter it is selected so that it is tightly included in the shielded transmitting coil.

The cable for the coil takes 4 core in the overall screen.

Now connect the TX (transmitting coil) to the board, the middle output and the coil screen is connected to minus the board, connect the oscilloscope, the minus probe for minus the board, and the plus to one of the ends of our coil.

When setting up the coil around it should not be metallic items !!! And so connect everything and look at the oscilloscope, what frequency it turned out.

Then write the value and set the coil to the side.

Similarly, we do the RX with the receiving coil, we measure its frequency, ideally, it must be lower frequencies of TX per 100 Hz. If this is not the case, it is necessary to fit the frequency, selection of the contour capacitor. As a result, you should turn out, for example 9.1 kHz TX and 9.0 kHz Rx.

Now the average RX output is isolated, and proceed to the reduction of the coil. Connect the coils according to the scheme below.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructionsWe put the coils, in a predetermined form for the pouring epoxy resin. We take an oscilloscope, minus probe to minus fee, plus to the C5 exit, exhibit on an oscilloscope the division time of 10 ms and division 1 volt on the cell. We look at our picture on an oscilloscope, there is no balance yet, so the vertical amplitude will be large. Then we cut one turn from the CX (compensation coil) from the side of the subpack to the RX, we bite this round and repaid. And we observe the reduction of amplitude. We produce such a procedure until the amplitude becomes zero. Then we reduce the volt / division and continue to wind up the turns until we pride to 0 with the minimum resolution of your oscilloscope. It is clear that it will not be ideal, but you need to find, then the number of turns, after the warehouse, it will start growing again. This is the situation and there is our intermediate balance. Now we fix the coil, with the withdrawal of CX, we make a loop of 10-15 cm, and we take it outwards to our fill, it will be our compensating loop that will help us up to bring the coil.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructionsSing the sensor with epoxy resin, but only half the depth of the form. Then, after the frozen, we take the oscilloscope, we begin our loop inside the shape and start to twist it and roast, trying to find the minimum amplitude value. After such a position is found, fix the loop with glue, check the balance, and fill to the end our shape.

  • After you have made a coil, you need to set up the discrimination scale of the terminator metal 3
  • Proper setting should look like in the table below
  • Manufacturing Metal Detector Terminator-3 DIY: Detailed instructionsMetal detector setup methods Terminator-3 is described here - Setting the scales of discrimination of metals Terminator 3
  • This is how the finished homemade coil for metal detector Terminator-3 looks like
  • Manufacturing Metal Detector Terminator-3 DIY: Detailed instructionsAlso to Terminator 3, you can make a DD coil. Detailed Description of the manufacturer DD Coils for Metal Detector Terminator 3 - Production of DD Coils for Metal Detector Terminator

Conclusion: Terminator 3 Although quite complicated in the manufacture and configuration, and will require some effort from you.

But neatly and correctly assembled metal detector will delight you with the quality of your work and pleasant finds, the Terminator three will work as equal to the branded metal detectors of the average price category, and besides your work, will require low material costs.

For the development of the Metal Detector Terminator-3, thank the following people: A2111105, Yatogan, Radiogubitel, Electric MD4U.ru forum

When writing this material, data from sites were used:

  • Radioskot.ru.
  • cxem.net
  • MD4U.ru.

A source: http://www.miriskateley.com/metalloiskatel-Terminator-3-svoimi-rukami

Metal detector Terminator

The Terminator Balancing Metal Detector proposed for assembly has a number of undeniable advantages among the many homemade devices of this schematics (IB detectors).

Design T3 developed by Yatogan (Yatogan, MD4U forum) and a radio engineer (Radiogubitel, MD4U forum), has a scheme engine similar to the instruments of the famous Tesoro company, but much more simple in the setting.

The impetus to the spread of this development was the printed circuit boards (with modifications and improvements) of another self-delicate - A2111105 (MD4U forum, soldering iron forum). I want to express them to gratitude for their work and effort, from all users and guests of the radio forum of the radioshem! Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

I will give some characteristics of the Metal Detector "Terminator 3": Depth of detection - 5 rubles Russia - 22-24 cm; Ekaterininsky Pyint - 27-30CM; Casque - about 80cm. The depth of detection is given for the medium-mineralized soil (chernozem) with a sensor with a diameter of 240mm over the wire. I want to say a little about discrimination: if in other devices of this class there is a certain threshold of discrimination when the target is detected (i.e., the device sees the object at the depth of the limit detection, but cannot recognize the type of metal from which the object is made), then in the Terminator this deficiency Practically absent - the device recognizes most of the objects at the limiting depth of detection.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

Immediately make a reservation - the assembly and commissioning of this IB device will be almost impossible for users who are just starting their way in the development of radio electronics, and experienced electronics can make errors.

What, scared? But not everything is so sad - you just need to properly prepare and not rush. Yes, and on the forum you will be helped with this.

Firstly - for assembling and adjusting the device, we will need such devices as a multimeter, oscilloscope, LC meter (for selecting elements according to identical characteristics on both metal detector channels), you can also need a generator and frequency meter.

Of course, such a set of devices cost a lot of money, and not every self-delicate to purchase it, but you can try to create a virtual measuring complex based on a personal computer. The benefit that the Internet has a bunch of useful programs for these purposes.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

You can download software as in our old site eLWO.ru. Finally, one important remark for beginners - if you are not sure about your abilities, you'd better collect the Volksturm metal detector for the beginning (master the basics, the principle of which IB device is based on the whole) is understood. Next, we give the base diagram of the metal detector Terminator 3.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

Terminator3 - one-photon metal detector for princespa IB. Simple as three kopecks and reliable as a bulldozer.

This is a pure coinnik with a simple refinement, which allows you to search for gold on the beach ignoring most of the color debris. Although T3 and the coinnik, it can also be used to search for war and for collecting metal.

But for this, it is necessary to enter "all metals" mode (which is provided in the diagram and on the board) initially the scheme was without this mode.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

The scheme is made with non-standard use of logic as an OU. The minus is that unknown by Cami Microus (therefore, to averaged the parameters of Microus Cascades, the noise level is higher.

Apply in this scheme the aqueous logic - it is possible, but not necessary, since the parameter variation will be even more. The only thing is that this can be rejected by the domestic sound generator to the domestic chip.

I want to add that in depth and in terms of the accuracy of the target identification (color), the Metal detector Terminator3 performs on a par with the company's brands of the average price category, and the head is higher than inexpensive brand MD.

This is not only personally my observation, but the overall opinion is quite a large number of people who used them. Itself so that it was - it is necessary to collect and set it up as it should be, and not as you have to.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructionsDETAILED DESCRIPTION OF CONTROL Metal Detector Terminator3. First, you need to see the scheme where nodes are indicated, here in the nodes actually and will be focused, it will be useful for configuration. So the autogenerator - produces current fluctuations when you connect the transmitting coil to it (hereinafter TX). These oscillations come out of the MC1 chip in the form of meander (as rectangular patterns on the ancient Greek temples and amphoras). Now the receiving coil (hereinafter RX), it also has a current entry TX (which creates a field) and it is necessary for this current (field) to balance with TX (i.e., to deduct the RX field from the TX field), and for this we need compensation Coil (hereinafter referred to as CX). In the DD CX sensor, the "ring" sensor is real in the form of a coil. Here we connect it so that the current in it fled in the opposite side relative to RX (how to determine this will explain in the future, when someone will be soldered by someone at least one fee) and by gradual overlapping from her turns to balance TX and RX over the current (called This is to zero, the balance simply speaking). Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

Balance management control over the oscilloscope to achieve minimal amplitudes in all positions of the order handle in turn. When the point is reached when the amplitude again begins to grow - a tuning loop is entering into business (it is made from one of the ends of CX).

But before that, we must configure TX and RX in frequency, while RX is done at 100 Hz lower than TX (it will be a starting point with a further configuration of the "Metal Scale" window).

The coils on one are connected to the device generator and the oscilloscope and are configured to the desired frequency.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

CX is not necessary to configure frequency.

We obtain that when a metal object is turned out under the sensor (in one direction or another, depending on the metal), and the current starts running into RX, which it falls into a pre-amplifier there is enhanced and fed into the synchrption agent (see scheme) The synchrodettector (SD) detects the phases of the receiving signal and gives it all into the amplification channels, this case is enhanced in the channels and falls on the MC8 compirator, the component task compare the signal levels in the channels and if they match the comparator gives permission to work the sound generator. In general, all the balans are working with small differences, the differences relate mainly to the uniforms of the soil. In the terminator tuning phase (cut, simply speaking).

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructionsChecking the metal detector fee after soldering: turn on the power on the freshly made and thoroughly washed from the flux board, do not connect the sensor, unscrew the handle of the feeling before the dynamics permanently appears, touch the sensor connector's finger - the sound for a second should be interrupted. If so, it means everything is in order and the fee of the fastine is true and without jambs. When the power is turned on, the diode must blink and go out, when the diode is turned off, the diode lights up and swell slowly. Running upwards: The discharge indication of the battery looks like this: the device begins to make frequent signals at the same time interval, the diode is on constantly, the sensitivity drops sharply. Files of various versions of printed circuit boards you can download in the archive. Manufacturing Metal Detector Terminator-3 DIY: Detailed instructionsSetting in frequency. All settings are made with that cable with which the device will continue to work. It is impossible to change its length after setting. If the experience of making sensors for the balanter is, then you will be easier. Next, read the winding technology and sensor settings for the Metal Detector Terminator3. Video on setting up the device and the latest versions of boards and firmware look at the forum. Project Authors: A2111105, Yatogan, Radiogubitel, Electric.

Forum for metal detectors

Discuss the Metal Detector Terminator

A source: https://radioskot.ru/publ/metallopoisk/metalloiskatel_terminator/16-1-0-304

Metal detector Terminator 3 do-it-yourself: Step-by-step instruction, assembly and circuit board

If you wish to make a metal detector with your own hands, then in this article you will find detailed instructions. In particular, specifications, schemes, settings, advantages and disadvantages of MD Terminator 3.

Metal detector Terminator 3 do it yourself. Assembly instructions

MD Terminator 3 is designed to detect items containing metal, in a low-conductive or dielectric array. With the help of the MD, the Pro Terminator can find metal in the soil, as well as on the bottom of various types of water bodies.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

Specifications MD Terminator-3

Main technical characteristics

  • Tim Metal Promotel: Selective
  • Discrimination: Yes
  • Sensitivity setting: yes
  • Setting the Soil Balance: Manual
  • Modes of operation: 2 pcs ("All Metals", "Discrimination")
  • Meals: 6 AA batteries;
  • Coil: 26 cm DD Waterproof

Test Test Test Terminator M with DD-26CM Sensor. (Chujka Max, Disp. In):

  • Coin 5 kopecks. Ø 25 mm ~ 40 cm.
  • Fibula Ø35mm.6m. ~ 31 cm.
  • Roman, dynory ~ 32 cm.
  • Gold ring "Wave" Ø 19 ~ 37 cm.
  • Silver chain Ø 26 grams. 925 samples. ~ 30 cm
  • Canning bank ~ 67 cm.
  • Leather wallet 30 coins of the USSR - 55 cm.
  • Casque ~ 92 cm.
  • Sewer hatch ~ 145 cm.
  • Limit detection range (metal accumulation, tank) ~ 2 meters

Equipment:

  1. Metal detector block - 1 pc.
  2. Gtage workshop collapsible - 1 pc.
  3. Power battles - 1pc.
  4. Search coil - 1pc.
  5. Screw fastening coil - 1pc.

The main technical characteristics of this variety of devices include the following:

1) depth of detection; 2) discrimination;

3) Soil balance.

Discrimination

This feature allows the metal detector to distinguish the metals that it detects in the ground or

At the bottom of various types of reservoirs.

In this mode, the device can be configured to a specific type of metal, cutting off all others. You can also set the detection of all metals.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructionsDepth of detection

The most important parameter that determines the efficiency of using the metal detector. The device with a coil of 240 millimeters can recognize the following items at the maximum distance: · Modern coins - 240 millimeters; · Pile-equipped coins of Catherine's times are Great - 300 millimeters; · Military helmets - 800 millimeters.

Balance of soil

Of various kinds in the device emitted by the device, the items are very distorted by it. Soil can also be caused by distortion. Because many minerals are contained in it, the level will depend

imbalance. The "Soil Balance" option is needed to screen false impulses. You can rebuild the soil in automatic mode.

Production of MDT 3 do it yourself

Create a metal detector Terminator 3 on its own necessary from the scheme

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

MDT scheme 3.

In the figure, which is located below, a plan for connecting radio components in one electrical circuit is presented. Link to the full size scheme

Making a circuit board

To make a metal detector's mounting board Terminator 3 on your own needs to perform

The following sequence of actions: - Search on the Internet of the Metal Detector Photo Molding Board Terminator M. - Printout of the image on a natural value printer. - sticking paper on a piece of textolite. - Circumcision of textolite with hacksaw around the perimeter. - Bad place for fastening the details of the selection. - Drilling punctures. - cutting with current-carrying sites. - Removal of paper with conductive branches. - Coloring bare paint. - Removing paper residues. - Especially metallized surface. - Final cleansing of the board.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

Assembling the scheme and selection of parts

Before starting the assembly of the metal detector, the terminator M should be selected for the circuit board all components according to the list of parts of the control unit of this type of devices. The procedure for assembling the metal detector Terminator Trio with jumpers begins.

Then the resistors and panels for chip are soldered. Next, the wires for radio components are soldered. At the end of the process, make sure that the soldering is performed efficiently, and radio components are installed correctly. Insert the device control unit into the finished scheme.

Put the plastic knobs on the switches, as well as on the axis of the resistors. Unite blocks with a sensor.

Components of the MDT 3 sensor parts

Metal detector circular sensor. At its perimeter there are contours from enameled wire

Ø 0.4 millimeters, which are a reception and, respectively, transmitting coils. Niche for wires is made from dielectric material. Collecting Terminator 3 with your own hands, all elements place on the rod. Make sure the sensor disk is secured safely. Rechargeable battery, as well as a block of controlling this type of devices, install so that you can change the modes of operation, continuously searching for metals. In the bar you need to cut the handle so that it is convenient to take it. If desire, you can make the elbow stop from the plastic tube.

Adjustment and preparation for work

During the test of the device in the field, the sensor should be closed to the surface of the Earth and remove from not. When it appears, the signal can be removed by turning the handle of the soil regulator.

Unnecessary metals can be cut off by turning the knob of discrimination. Sensitivity can be reduced to the depth of recognition of the desired metal.

Configuration of discrimination

Configuring the Discrimination Scale .doc To configure discrimination Run the non-ferrous metal detection mode. The discrimination control must be in a zero position. Then turn the handle with the hourly arrow until it stops.

Take turns to bring a piece of metaiferrit to the sensor. For ferrite, the device must react with two signals. On the color one. If everything is so, then the sensor works correctly.

Checking the instrument board Checking the instrument board is carried out using an oscilloscope. If there is no possibility of checking the metal detector of the house, contact your radio workshop. There will be done everything in an hour.

Battery discharge indication

Funning the finding of the treasure can not notice that the battery sat down. In order to avoid this, the MS10 microchip is soldered into the device, the conclusions of which are connected to the metal detector. Signal wires are soldered to the LED inserted into the MDT 3 control unit panel.

When the battery starts to sit down the LED flies when charging will remain 20% it will burn constantly.

Benefits

The pros will be attributed to the simplicity of the design, the ability to make a terminator 3 with your own hands saving.

disadvantages

Of the minuses, the absence of the ability to use finger batteries, no ability to adjust the beep, no visual indication.

In custody

I finally completed all my affairs and now I will regularly post the useful articles from the world of radio electronics. Write in x your impressions about this article, whether it was useful and what else can I add, and I give you a small bonus finally: several circuit boards for T3 + prog

Terminator assembly 3.

It will be interesting for the Fortune Metal Detector Detailed Instructions

A source: https://electroinfo.net/metalloiskatel-svoimi-rukami/12-metalloiskatel-teminator-3-poshagovaya-instrukciya.html

Making metal detector Terminator with his own hands

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

Metal detector assembly The Terminator requires a minimum of time, and the device affects the user with high sensitivity. The device demonstrates performance sufficient to detect various artifacts at a considerable depth. The device is complemented by a complex of discrimination of metals, which makes the search more convenient. The device is able to linearly remove the LCD, demonstrating a low operating current, which extends the service life from one charging.

Collect Metal Detector Model Terminator M is not difficult. To complete the work, you will need the skills and tools that everyone possesses. The correctly assembled detector is able to detect the presence of artifacts on heavy soil. Performance features make the device better in its class.

The Terminator is used to detect coins, and in the principle of the device, there is an induction balance technology. The assembly is performed on the basis of the products of the company Teresoro, but has important differences, both in constructive and operating level. A feature of the device is the metal detection at the limiting sensitivity values.

Therefore, the device is popular among craftsmen who prefer their own assembly.

Technical characteristics of the metal detector

The device Terminator 3 has a number of indicators that determine its capabilities.

Depth of detection with a coil 24 cm:

  • Coins of the Russian Federation - up to 24 cm;
  • Coins of the Russian Empire - up to 30 cm;
  • Casas - up to 80 cm.

Other characteristics of the detector:

  • Operating frequency indicator - 7-20 kHz;
  • Available modes of operation - "Discrimination" and "All Metals";
  • Soil balance - in manual mode;
  • Power - 9-12 volts.

Detector "Terminator 3" with his own hands

Construction features make terminator-3 complex for self-assembly. Manufacturing for beginners - extremely difficult task. Therefore, to use the proposed diagram of the metal detector, the Terminator follows only experienced people with experience in electrical engineering.

Create a device helps:

  • Oscilloscope;
  • LC meter;
  • Multimeter;
  • Standard tool kit.

If there is no equipment at hand, the replacement is computer emulators, which are not difficult on the Internet.

Making a circuit board

The assembly is made using the circuit board. Pick up the finished fee is not easy on the market, so you will have to make it necessary to make it personally. Size diagrams are about 104 × 66 mm. Print the image of the scheme with the corresponding dimensions.

It remains to trim the edges, leaving the stock into a centimeter on each side. Under hand there must be a foil textolite of identical sizes with a margin into a centimeter. Stripping of the textolite is performed by the emery before the appearance of the shine.

Work requires accuracy to accidentally not remove the copper layer.

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Figure schemes We apply on textolit. We provide reliable mount with glue or tape. Kerner is suitable for marking functional holes, after which you can rejuvenate the scheme.

Next, the hole drilling is performed exactly by marks. Hoven will allow the textolite to trim to the specified dimensions. Observing accuracy, paths are applied to the surface with a permanent marker or varnish.

Before continuing work, waiting for complete drying.

Next Metal detector Model Terminator 4 requires the performance of the board. Here we need hydrogen peroxide (3 percent composition), as well as lemon k-ta and dining salt. Poles (100 ml) and 30 g of acid mixed with 5 g of salt are poured into the container.

Stir the solution to complete dissolution. Detailed instructions for creating a metal detector involves the subsequent placement of textolite in a container with a solution. Next, we expect until the copper coating is dissolved.

The acceleration of the process occurs when heated and stirring.

After completing the etching, it is necessary to remove the marker or varnish with acetone. Removal of the solution from the surface occurs with water or alcohol. The resulting tracks are tailored, but it should be avoided to get into the holes.

We collect the scheme and select spare parts

On the basis of the scheme presented below, we perform the assembly process of the entire circuit board.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

The list of parts from which the Metal Detector Terminator 3 is presented in the following figure.

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

Cyclohevka microcircuit

Soldering jumpers is performed by radio components. Works are carried out with a lacquered or insulated wire with a minimum cross section. The jumpers are shown in the picture with thin stripes.

SMD SPAPE (elements of high heat resistance) is made from the side of the board tracks. In the diagram they are marked with yellow.

Next, the soldering of the connectors and the remaining parts are performed.

Wire output for fixing the case required for the following details:

  • Turning on-shutdown controls;
  • Sound and light indicators;
  • Batteries;
  • Mode Switch.

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Winding coils metal detector

The next step requires the presence of a winding enameled wire of 0.4 mm. It should be folded widow to get two end and two starts. You should wind in parallel mode from 2 coils.

On the plywood canvase, draw a circle of 200 mm for the transmitting coil (TX) and 100 mm circle under the receiving coil (Rx). We drive around the circumference of nails in Cambrids in 10 mm increments.

Cambricks are required in order not to damage insulation when winding.

For the transmitting coil, 30 turns have been wounded by dual wire. Next, we impregnate the coil with varnish and wait for complete drying. After it is necessary to perform strapping by threads. The coil can be removed from the plywood mandrel and discourage the core to get a one-piece 60-vitel winding.

As a result, we get two extreme and one medium taps. The final stage is to blame the coil with a tape, on top of which the aluminum foil layer is applied. Using foil allows you to create a protective screen.

On top of it, we wash the isolent, which will protect the shielding layer.

Go to work on the receiving coil RX. The process is also performed, but taking into account the mandrel 100 mm, 48 turns will be required. Winding is performed by a dual wire. Middle output TX-coils connect to minus on the circuit board.

A similar RX-coil output is required to configure, after which it is necessary to carry out its insulation. The winding of the compensating coil is performed by solitary wire and is 20 turns.

The diameter of the coil is chosen so to attach the product inside the TX coil.

Setting up metal detector Terminator

The first task is to equalize the frequency. To do this, connect the Wire of the TX winding to the contact of the connecting wire, and after the minus board. The oscilloscope is connected to the "minus to minus" principle.

Property with a plus sign connect with the conclusion of the coil. The obtained values ​​are written. A similar procedure is performed for the RX coil. Ideally, the receiving reel indicators are 100 Hz below the frequency of the transmitting coil.

The setting is made using parallel connected capacitors 500 PF to C1.

Next should be balancing coils. Winding are placed in the housing and are connected by the following scheme:

Manufacturing Metal Detector Terminator-3 DIY: Detailed instructions

Connect the RX-coil and CX with a margin, which will allow in the future to conduct a setting. After connecting the oscilloscope, we set the time of 10 ms and Volt 1 V. The adjustment is carried out in order to get the smallest amplitude.

It is necessary to prepare to often disappear the output of the CX coil to reduce the number of turns.

After reaching the specified parameter, we turn to the next value and repeat the procedure until the minimum frequency is obtained with the lowest volt / division.

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Next follows the fill of the scheme. This use epoxy glue, which is suitable for solving the problem. Pulling the fee should be used so that the CX and RX element adjusting loops can be used.

After drying and checking the oscilloscope, the values ​​of the loop position helps to adjust the values. Having installed the latter in the perfect position, fix the loop without shifting them. Suit superciles.

Re-checking allows you to go to the full pouring the coil with glue.

Setting the discrimination of the detector

Install the SA2 switch to the color detection position. Ferrite cut-off indicator - 40-50 com. We balancing the soil regulator in the specified range. If the clipping rate is located at 0-40 com, then increase the C2 capacity. With an indicator of 50 - 100 com - C1 capacity.

The value of the discrimination regulator should be zero, so we set it to the extreme position. To check the detector, the terminator 3 is used by color and ferrite. If a double beep occurs when the latter's tray occurs, and the detector reacts a single signal to the colormet, the task is made correctly.

In the reverse situation, you should change the outputs on the TX-coil.

The next step is to set the visibility of the entire spectrum of metals. Reducing the C1 capacity is shifted to foil, and a decrease in C2 to aluminum. It is important to achieve the visibility of all metals, as well as cut-off ferrite with an indicator of 40-50 kΩ. Capacitor C12 is used for additional configuration.

Testing detection

When the works are completed, checking the detector in the field. We go to the search site and turn on SA1. The sensor should be brought and removed from the soil.

After receipt of the signals, configure the R8 regulator so as to obtain the visibility of copper and the absence of pulses from the soil. After achieving the optimal position we mark it.

The R29 controller allows you to improve the quality of the visibility of metal artifacts and exclude incorrect signals.

A source: https://techsad.com/aksessuary/izgotovlenie-metalloiskatelya-Terminator-svoimi-rukami/

Metal detector Terminator For many years, occupies an honorable place in the ranks of self-made metal detectors. Over the years, many improvements were made, the result of which are various modifications of this instrument. Consider the two-tonal metal detector Terminator 3 (Fig. 1), working on the principle of induction balance. In fact, this is an improved metal detector Terminator 4. Its main features are: small energy consumption, discrimination of metals, non-ferrous metals mode, the mode is only gold and very good characteristics of the search depth, compared to semi-professional branded metal detectors. With relatively small cost and time costs, anyone can collect the Metal Detector Terminator 3 with its own hands, if it is accurately guided by the detailed instructions in this article.

Exterior of self-made metal detector Terminator 3

Making a circuit board

The scheme is collected on the circuit board. Find on sale fee under a specific scheme problematic, so we will create it with your own efforts. Below is an accurate action plan for successful circuit board:

  1. Print the circuit board pattern (Fig. 2).

Mounting scheme for self-made fees

The size of the diagram itself should be 104 × 66 mm, so when printing, we reduce the picture to the desired dimensions. You can also download a circuit board and a program for processing and printing on the link.

Cut off the extra edges, leaving 10 mm in the reserve on each side. We buy, corresponding to the size of the scheme, foil textolite with a reserve of 10 mm on all sides. We clean the textolit of sandpaper to shine, while trying not to wipe the copper layer;

  1. We assign the pattern of the scheme on the textolit. Fix it with super glue or tape from the edges left in stock. Kerner or screwing the future holes and reveal the scheme from the textolite. We produce drilling holes in the pattern of the circuit board. For drilling, drill from 0.5 to 0.7 mm or a needle with a broken loop. We make a cutting of the textolite to the metal to the metal, you can also use other instruments;
  2. Gently, guided by the mounting scheme, put the lacquer or permanent marker of the track. We are waiting for complete drying;
  3. We carry the board. To do this, we will need 3 percentage of hydrogen peroxide, citric acid and the usual salt. In the dishes of a small size, we pour 100 ml of hydrogen peroxide. Add 30 g of citric acid and 5 g of salts. We stir up to dissolution, after which we put the textolol in the vessel. We are waiting until all copper coating on the board is dissolved. To accelerate the process, it is recommended to heat the solution and maintain its circulation with stirring or air;
  4. After taking the board, we remove the marker or varnish acetone. Wash the board with water or alcohol from the residuals of the solution. The obtained tracks are brought in a small amount of solder, trying not to spare holes for details. The board is ready for installation details.

The manufacturing process can be viewed on the video attached below.

Assembling the scheme and selection of parts

The metal detector scheme is shown in Figure 3. Guided by it and the circuit board of the circuit board, we make the board assembly.

Concept electrical scheme

Details marked on an asterisk can be selected by an experimental way to improve the characteristics of the device. But to begin with, it is recommended to collect strictly according to the scheme, and experiment when you reach the device setup.

The list of parts and comments on them are listed in the table in Figure 4, and in Figure 5, the Cocoovka chip and transistors are indicated.

List of parts for metal detector Terminator 3

Cocoovka chip and transistors

The soldering is starting with connecting jumpers from radio components. To do this, use the lacquered or insulated wire of the smallest section. The jumpers are marked on the mounting scheme with simple thin lines.

On the part of the tracks we solder the SMD details - the radio elements of miniature sizes and increased thermal resistance. They are isolated yellow. Then we solder the microcircuits and the remaining parts. For the elements of adjustment, turn on and off, changing the mode, batteries, sound and light indication - display the wires to secure these parts on the housing. For adjusting resistors we find suitable caps. Also output the connector for the sensor wire. The sample board of the board with the connector, regulators and switches is shown in Figure 6.

Sample of the collected homemade board

Capacitor C2.3 and SA3 switch assemble mounted mounting.

To check the performance of the collected circuit, connect the battery with a voltage of 9 V. When the device is turned on, the LED should light up and go out, as well as when it is turned off. When touching the connector for the sensor, the sound of the metal detector must stop at a small period of time. In the maximum position of the sensitivity regulator, there must be a tonal sound, and with the minimum - missing. Do not forget to check all control voltages in the diagram. To do this, we include a constant voltage mode in the tester within 20 V. minus probe we apply to minus fees, and the plus measure the voltages on the points according to the scheme.

The housing is made from any plastic box of the desired size and is fixed on the metal detector's rod. You can use the housing from other metal detectors, such as the terminator M or Trio Terminator. We subscribe buttons and regulators in accordance with the functions performed.

With successful creation of such a scheme, you will receive a valuable experience that will need to collect the most complex metal detector with your own hands.

Components Sensor (coil) Metal detector

An important part of any metal detector is the sensor. It consists of coils in the housing, which is also searching by transmitting and receiving the signal.

To assemble the metal detector sensor, you will need the next set of components:

  1. Housing;
  2. Wire for connecting to the diagram. A shielded wire from old audio equipment with 4 contacts and 1st overall shielded (Fig. 7) is suitable;

Plug shielding

  1. Wire winding lacquered with a diameter of about 0.4 mm. You can find on old kinescopes of televisions or computer monitors;
  2. Epoxy adhesive;
  3. Super glue;
  4. Insulating tape;
  5. Foil;
  6. Threads;
  7. Varnish.

First you need a hull for the coils of the sensor. For high-quality metal detector, it is recommended to buy a ready-made ring type. You can also make it yourself, but it will require high time and high extent of skill and intelligence. In the purchased case, the recesses for coils of the required diameter will already be present, the output for the wire and attachment for the rod. The bar for the sensor can be made of any durable stick, PVC pipes and other dielectric material.

We wind up the outer winding, called in the future TX. We select the diameter by the body, about 20 cm. Washed winding winding clockwise on a round item of the same diameter, for example, on a cut-out foam. The winding is made by two folded wires in the amount of 30 turns. There should be 4 outputs, of which 2 output of different wires from different sides connect each other. We firmly fix the areas of the winding with threads and cover with varnish. After drying, insulating the winding with a tape and overlook the foil from above. At the end of the winding, the foil does not connect, we leave the interval 1-2 cm. Foil is soldered and removing the wire, and turn the TX coil isolate again.

An internal winding, called RX, is made in the same way, but with a diameter of 2 times less. Number of turns 48. Just as in the TX coil we connect two wires.

Middle winding is called compensation or CX. We wake up a single wire counterclockwise with a single wire with the fact that it should fit into the groove with TX. Do not be insulated and do not drag this winding.

There should be three coils of the corresponding Figure 8. Fixing the coils will be made after adjusting the sensor.

Sensor coil diagram for MD Terminator 3

Adjustment and assembly of metal detector

The following is a detailed instruction for assembling and finite adjustment of coils. For this we need oscilloscope. You can use a computer as an oscilloscope. Next to the metal detector should not be metallic items. To configure, perform 2 steps.

The first step of the setup is the leveling of the coil frequency:

Connect the TX winding according to the scheme. The wire with shielded foil is connected to the overall shielded contact of the connecting wire, and then on minus board. Turn on the device. The minus probe oscilloscope is adjusted to minus fees, and the plus to one of the conclusions of the coil. We measure and write the frequency.

In the same way, we connect the RX coil instead of the TX and measure the frequency.

RX winding frequency should be 100 Hz less than TX frequency. Regulation We carry out a parallel connection of the capacitors of 500 PF to the C1 condenser. For example, the frequency of TX and RX coils is 16500 and 15900 Hz, respectively. Consequently, we need to lower the generator frequency for the TX coil at 500 Hz. To do this, without turning off the RX coil, we connect additional capacitors until we achieve the frequency of the RX 15400 Hz. For convenience in the scheme, we are found all the capacitances of the capacitors and replace the capacitor with the capacity of this amount.

The second stage is balancing coils:

We settle all windings into the housing and perform a compound according to Figure 8. CX and RX is produced with a reserve for future adjustment. Minus oscilloscope connect to minus fees, and plus to the output of the C5 condenser and the RX coil. I exhibit on oscilloscope time / division of 10 ms, and Volt / division 1 V.

The setting is to achieve the minimum amplitude. We will have to constantly disappear and pinch the output of the Cx coil to reduce the number of turns. As soon as they achieved a minimum amplitude, we switch the volt / division regulator to the following less.

We repeat until it reaches the smallest amplitude value with the smallest volt / division.

After that, you can pour half the scheme with epoxy glue, leaving the CX and RX free loop free. After drying, check the amplitude of the oscilloscope again and we carry out the movement of the loop. By choosing the optimal position of the loop, we try without shifting it, fix it with super glue. And after another check, completely pour the coil with epoxy glue (Fig. 9).

Finished coil for terminator 3

The assembled sensor can also be used on metal detectors Terminator Pro, Trio Terminator and Terminator M, with proper and high-quality configuration of the circuit.

Configuring discrimination and preparation for work

To configure, turn the SA2 switch to only a non-colored metal. Ferrite cut-off point should be in the area of ​​40 - 50 com, so we set the R8 soil balance regulator to this range. If the clipping point is in the range of 0 - 40 kΩ, add parallel to C2 container, and if 50 is 100 com - add a container to C1. The R7 discrimination control must be zero, so unscrew it to the extreme position clockwise. Move to metal detector of non-ferrous metal and ferrite. If two signals sound for ferrite, and on the non-ferrous metal one - the windings are connected correctly, if on the contrary - change places the conclusions of the TX coil.

Next you need to adjust the visibility of all metals. For this, guided by the table in Figure 10, we move visibility from weaking metals to highly conductive selection of capacitor capacitance C1 and C2.

Scale discrimination of metals

With a decrease in the C1, a shift is shifted to foil, and with a decrease in C2 tank - to aluminum. We achieve the visibility of all metals from the table, the visibility of copper and cut-off of ferrite under the soil balance of 40 - 50 com. Capacitor C12 produce additional adjustment.

After setting up the metal detector, Terminator 3 is released into the search area and turn on the SA1 metal detector. Approach and remove the sensor from the ground. When the signals are submitted, gradually unscrew the ground regulator R8 counterclockwise, achieving the lack of signals for the soil, and we are convinced of copper. The successful position of the regulator is preferably marked. The rotation of the discrimination regulator R7 counterclockwise cut the metal we do not need. Cutting occurs alternately from the foil and further, according to the table in Figure 10. The R29 sensitivity handle can increase the visibility range of metals and adjust false responses. The SA2 switch is recommended to put all metals in mode, as it increases slightly the detection range. The SA3 switch can be turned on - only gold, which is enabled when the mode is turned on - all metals.

Since the price of non-ferrous metals and old coins is very high, then when searching in the right area you can recoup the homemade metal detector in the right time.

If a You wish to make a metal detector with your own hands, then in this article you will find detailed instructions. In particular, specifications, schemes, settings, advantages and disadvantages of MD Terminator 3.

Metal detector Terminator 3 do it yourself. Assembly instructions

MD Terminator 3 is designed to detect items containing metal, in a low conductive or dielectric array. With the help of the MD, the Pro Terminator can find metal in the soil, as well as on the bottom of various types of water bodies.

Metal detector Terminator 3: Step-by-step instructions

Specifications MD Terminator-3

Main technical characteristics

  • Tim Metal Promotel: Selective
  • Discrimination: Yes
  • Sensitivity setting: yes
  • Setting the Soil Balance: Manual
  • Modes of operation: 2 pcs ("All Metals", "Discrimination")
  • Meals: 6 AA batteries;
  • Coil: 26 cm DD Waterproof

Test Test Test Terminator M with DD-26CM Sensor. (Chujka Max, Disp. In):

  • Coin 5 kopecks. Ø 25 mm ~ 40 cm.
  • Fibula Ø35mm.6m. ~ 31 cm.
  • Roman, dynory ~ 32 cm.
  • Gold ring "Wave" Ø 19 ~ 37 cm.
  • Silver chain Ø 26 grams. 925 samples. ~ 30 cm
  • Canning bank ~ 67 cm.
  • Leather wallet 30 coins of the USSR - 55 cm.
  • Casque ~ 92 cm.
  • Sewer hatch ~ 145 cm.
  • Limit detection range (metal accumulation, tank) ~ 2 meters

Equipment:

  1. Metal detector block - 1 pc.
  2. Gtage workshop collapsible - 1 pc.
  3. Power battles - 1pc.
  4. Search coil - 1pc.
  5. Screw fastening coil - 1pc.

The main technical characteristics of this variety of devices include the following:

1) depth of detection; 2) discrimination; 3) Soil balance.

Discrimination

This feature allows the metal detector to distinguish the metals that it detects in the ground or

At the bottom of various types of reservoirs.

In this mode, the device can be configured to a specific type of metal, cutting off all others. You can also set the detection of all metals.

Metal detector Terminator 3: Step-by-step instructions Depth of detection

The most important parameter that determines the efficiency of using the metal detector. The device with a coil of 240 millimeters can recognize the following items at the maximum distance: · Modern coins - 240 millimeters; · Pile-equipped coins of Catherine's times are Great - 300 millimeters; · Military helmets - 800 millimeters.

Balance of soil

Of various kinds in the device emitted by the device, the items are very distorted by it. Soil can also be caused by distortion. Because many minerals are contained in it, the level will depend

imbalance. The "Soil Balance" option is needed to screen false impulses. You can rebuild the soil in automatic mode.

Production of MDT 3 do it yourself

Create a metal detector Terminator 3 on its own necessary from the scheme.

Metal detector Terminator 3: Step-by-step instructions

MDT scheme 3.

In the figure, which is located below, a plan for connecting radio components in one electrical circuit is presented. Link to the full size scheme

Making a circuit board

To make a metal detector's mounting board Terminator 3 on your own needs to perform

The following sequence of actions: - Search on the Internet of the Metal Detector Photo Molding Board Terminator M. - Printout of the image on a natural value printer. - sticking paper on a piece of textolite. - Circumcision of textolite with hacksaw around the perimeter. - Bad place for fastening the details of the selection. - Drilling punctures. - cutting with current-carrying sites. - Removal of paper with conductive branches. - Coloring bare paint. - Removing paper residues. - Especially metallized surface. - Final cleansing of the board. Metal detector Terminator 3: Step-by-step instructions

Assembling the scheme and selection of parts

Before starting the assembly of the metal detector, the terminator M should be chosen for the circuit board All components according to the list of details of the control unit of this type of devices. The procedure for assembling the metal detector Terminator Trio with jumpers begins. Then the resistors are soldered and chip panels. Next, the wires for radio components are soldered. At the end of the process, make sure the soldering is done Qualitatively, and radio components are installed correctly. Insert the device control unit into the finished scheme. Put plastic handles on switches, as well as on the axis of the resistors. Block conclusions Connect with a sensor.

Components of the MDT 3 sensor parts

Metal detector circular sensor. At its perimeter there are contours from enameled wire Ø 0.4 millimeters, which are a reception and, respectively, transmitting coils. Niche for wires is made from dielectric material. Collecting Terminator 3 with your own hands, all elements place on the rod. Make sure the sensor disk is secured safely. Rechargeable battery, as well as the control unit for this type of devices install so that It was possible to change the modes of operation, continuously searching for metals. In the bar you need to cut the handle so that it is convenient to take it. If desire, you can make the elbow stop from the plastic tube.

Adjustment and preparation for work

During the test of the device in the field, the sensor should be closed to the surface of the Earth and remove from not. When it appears, the signal can be removed by turning the handle of the soil regulator.

Unnecessary metals can be cut off by turning the knob of discrimination. Sensitivity can be reduced to depth Recognition of the desired metal.

Configuration of discrimination

Setting the Discrimination Scale .doc To configure discrimination, start the non-ferrous metal detection mode. The discrimination regulator must To be in the zero position. Then turn the handle with the hourly arrow until it stops.

Take turns to bring a piece of metaiferrit to the sensor. For ferrite, the device must react with two signals. On the color one. If everything is so, then the sensor works correctly.

Checking the instrument board Checking the device's fee is carried out using an oscilloscope. In the absence of checking the scheme Metal detector at home, contact the radio workshop. There will be done everything in an hour.

Battery discharge indication

Funning the finding of the treasure can not notice that the battery sat down. In order to avoid this, the device is soldered MS10 chip, the conclusions of which are connected to the metal detector. Signal wires sold to LED inserted into the MDT 3 control unit panel.

When the battery starts to sit down the LED flies when charging will remain 20% it will burn constantly.

Benefits

The pros will be attributed to the simplicity of the design, the ability to make the terminator 3 with your own hands allows Save.

disadvantages

Of the minuses, there is no possibility of using finger batteries, no possibility to adjust Beep, no visual indication.

In custody

I finally completed all my affairs and now I will regularly post the useful articles from the world of radio electronics. Write your impressions about this article in the comments, whether it was useful and what else can I add, and I give you a small bonus finally: several circuit boards for T3 + prog

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