Nalashtuvannya metaloshukacha. Zagalni porada that practice. Do-it-yourself small-sized sensitive electronic metal-shukach

Metal noises on the beat are insensitive to metal noises with weak ferromagnetic powers, such as, for example, copper, tin, silver. It is impossible to increase the sensitivity of the metal noise, the differences in the frequencies of the beat are small in memory with the usual methods of indication. A significant effect is given by the stoking of quartz metal shredders. Electronic shukach, the principle diagram of which is shown in fig. 135 and it is composed of a vibrating generator, selected on transistors GU, and a buffer stage - an emitter repeater, selected on transistors T2, divided by quartz Kvі in the indicator attachment - a detector on diode D2 with a constant stream on transistors TK. The aim of the UPT is to serve as a fastener with a strum of total respiration of 1 mA.

Rice. 135. Small-sized sensitive electronic metal shukach

Due to the high quality factor of quartz, the smallest changes in the frequency of the winding generator will lead to a change in the total support of the rest, as can be seen from the characteristic shown in fig. 135.6, but by reason of advancing sensitivity and accuracy in judgment.

Preparing to the point of asking for help in adjusting the generator to a frequency parallel to the resonance of quartz, which is 1 MHz. The price of the adjustment is carried out by capacitors of variable capacity C2 (roughly) and sub-construction capacitor C1 (exactly) for the width of the frame of metal objects. Oskіlki quartz є element zv'azku between vimіryuvalnoy and indicator part of the annex, yogo opіr at the moment of resonance is great and the minimum indication of the arrow attachment is to indicate about the exact alignment of the annex. Otherwise, a robot with an attachment is not disturbed like that with metal junkies for a battle. The sensitivity level is regulated by a changeable resistor R8.

In particular, I will add a cistern frame L1 prepared with a cable tie. The central core of the cable is removed and replaced by six turns of the cable type PEL 01-02 with a length of 115 mm. The design of the frame and the order of visnovkіv are shown in fig. 135, Art. Such a frame can be a good electrostatic screen. The rigidity of the frame construction is ensured by placement between two discs with orgskla or getinax with a diameter of 400 mm and a thickness of 5-7 mm.

The device has KT315B transistors, a 2S156A silicon reference diode, a D9 type detector diode with an alphabetical index. The frequency of quartz can be in the range of 90 kHz to 1.1 MHz. Cable RK-50.

Note. To stretch 6 turns of the PEL 0.1-0.2 cable at the RK-50 cable, it is necessary to take a fishing line with a diameter of 0.7-0.8 mm, wind it up, as it is assigned more, cover it with BF-2 glue, let it dry, and then slip into the middle of the cable,

At the edge of the shortest metal detector

Today we will recognize you as one of the most popular in Russia in 2015 metal scammers. In this article, you know about the best ground metal shucks, which are recognized as such for the search of coins, old relics, shmatkiv of the bay, color metals just near the earth.

Rating of the most popular metal shuckers in Russia

Models of metal-shukachіv raztashovanі in the table zі zbіlshennyam srednії tsіni, pochinayuchi z found. All models at the time of writing the article are in wide sale (metal noises, it is important that it is impossible to know at once in stores, they were not looked at).

Model

Price

Description

Characteristic

JJ Connect Adventure V500

Glibina - Ø 12 cm. Coil 205 mm. 1 joke mode. Mechanical setting. Striletsky indicator

Cutting inexpensive metal shukach

8 out of 10

Garrett Ace 150

3 play modes. 1 working frequency. Digital RK display. Oval cat. Vaga 1.2 kg

Metal shukach for shukovy systems any time

8 out of 10

Bounty Hunter Discovery 2200UA

1 working frequency. Depth of detection: coins up to 30 cm, larger objects up to 91 cm. Digital RK display. Round concentric coils. Vaga 1.09 kg

The best metal shack for shuku coins

10 out of 10

FISHER F-2

1 working frequency. Depth of detection: coins up to 21 cm, larger objects up to 90 cm. Round 8-inch cat. Vaga 1.2 kg

The most economical medium of budgetary metal shredders

10 out of 10

Garrett Asi 250

5 modes for a joke. Depth of manifestation up to 120 cm. Vaga 1.2 kg

The best metal joker for beginners

9 out of 10

Garrett Ace 350

5 modes for a joke. Depth of coin detection up to 35 cm. Boundary depth over 1 m. Vaga 1.2 kg

Shrinking metal shackle for stuck coristuvachs

10 out of 10

Minelab X-Terra 305

2 play modes. RK display. Vaga 1.3 kg

Shorter professional metal shukach

10 out of 10

Minelab X-Terra 705

4 play modes. 3 operating frequencies. RK display. Vaga 1.3 kg

The best professional metal shukach

10 out of 10

Minelab Eureka Gold

2 play modes. 3 operating frequencies. Vaga 2.2 kg

Cutting metal grinder for gold

10 out of 10

And now a report about the best and most popular metal-shockers:

1. Cutting inexpensive metal shukach
JJ Connect Adventure V500


Photo: pro-spec.ru

One of the best among the found metal detectors on our market and the first among the most popular budget models. There are plenty of opportunities to show coins, jewelry embellishments (silver, gold) on a small depth. Metal shukach is suitable for chatkivtsiv, quiet, who just wants to try it and is not ready to go to the serious attachment.

From the comments:

“Skіlki once missed metal shukach, and near the water they had a chance to practice - they don’t break. Vitrimuvave up to -8 ° C, as it falls lower, it just starts to glitch and fluctuate. Know everything: in my practice - at a depth of up to 50 cm, less colors were used. Handy twists. More simple to the vikoristan.

Pros:

  • available price;
  • ease of management (arrow indicator, autopilot);
  • handy rich tone sound indication;
  • gnuchka system nalashtuvan, p_dstroyuvannya p_d type ґruntu;
  • adventitious for a wide range of weather minds;
  • waterproof coil;
  • wake-up speaker;
  • you can plug in headphones;
  • insensitive to the point of falling.

Cons:

  • when the temperature is lowered, it will be repaired again to give an alarm;
  • weak place - a cat;
  • small clay for a joke;
  • not suitable for serious jokes.

2. Metal shukach for shukovy systems any time
Garrett ACE-150


Photo: www.geodom.ru

One more metal shukach, which is suitable for a beginner. But the range of yoga possibilities and the efficiency of vikoristannya is already shorter. Maє 3 modes for a joke. It shows whether or not metal, coins, jewelry pieces. Yogo can be tuned to the singing type of meti. Building pratsyuvati on the occupied territories. Appropriate for grown-ups and for toddlers.

From the comments:

“I want to say something that it’s especially far to go somewhere for the sake of asking for a joke, it’s invisible. And you can take the entire metal detector with you for repairs. And there, at the vіlnu hvilinka, walk through unknown places.

“On me, then the best metal junk. Robiti vmіє mayzhe all the same, scho and more solid models. Metals are divided, three different sounds react with them. The screen is also simple and intuitively intelligent.

Pros:

  • available price;
  • ease of management and selection;
  • compactness;
  • small vaga;
  • S-like 3-section rod with a handy armrest;
  • rich tonal system of sound identification;
  • inbudovaniya dynamics, you can plug in headphones;
  • oval coil in a sealed housing;
  • indication of the depth of the flood;
  • 5 segments in discrimination;
  • battery charge indication.

Cons:

  • block keruvannya, the screen is sensitive to hitting the water;
  • small clay for a joke;
  • there is no regulation of density;
  • nemaє vіdbudovi vіd ґruntu;
  • does not indicate exactly the roztashuvannya;
  • Minimal vibrancy.

3. The best metal shack for shuku coins
Bounty Hunter Discovery 2200UA


Photo: www.optivisions.ru

One of the best metal shufflers, like finding coins for you is a hobby.

From the comments:

“For the first metal joker, the model is just super! Lightweight, easily applied.

Having bought about the same time and already having a small collection of relics. Having sold them on the Internet-auction and may have recouped the accessories.”

“Metal detector of its pennies cost. Pratsiuє without hibnih spratsovuvan i according to dew, i pіd hour doshchu. Good discriminator.

Pros:

  • regulation of sensitivity;
  • 4-tone sound indication;
  • 2 joke modes;
  • discrimination of 9 segments from lashings;
  • ground balance;
  • function of ignoring unimportant objects.

Cons: not revealed.

4. The most economical medium of budget metal shredders
FISHER F-2


Photo: spec-tech.com

If you are an amateur joker and value not only the result, but also the search process itself, the Fisher F-2 metal joker will tell you. Its design is thought out in such a way that the sound is not only hoarse, but handy. Ergonomic handle lies lightly in your hand, protecting you. Zavdyakov cover in cold weather does not let hands freeze. Nalashtovuєtsya pіd be-like growth.

From the comments:

“If you have seen them with the help of the device ahead (before you have traveled with the detector of your own company), your manner of seeing sounds for everything, for which you should be tempted, it disappointed me less. Ale for an hour pristosuvavsya. If I want to say it all the same, the discreet is invisible, you need to call. ”

“The rods are trimmed well, without play, nothing happens anywhere, do not creak. The cat is more mobile, it allows niches in bushes, on kalyuzhas and on milk water, a hood is not needed, even a mitzna: you can see the forge hitting the stone, chicks, roots. There are no pardons during blows. Zagalom, the best metal jukebox for an amateur.

Pros:

  • easy to manage;
  • superior;
  • light;
  • ergonomic;
  • indication of methy type;
  • 7 discrimination programs;
  • sealed box.

Cons:

  • nemaє vіdbudovi vіd ґruntu (balancing is less automatic);
  • the depth of manifestation is small;
  • powerful to batteries.

5. The best metal joker for beginners
Garrett Asi 250


Photo: www.doskaurala.ru

One of the leaders of excellence. Pratsiuє practically bezvіdmovno. For the first seasons, poshuku has a garne solution.

From the comments:

“There was nothing coherent in mastering. Uvіmknuv. Nalashtuvav - and forward. The discriminator is average, but enough for a beginner.

“The best way for the quiet, who takes metal shukkach from him to a picnic or the beach as an addition to the main active holiday. And the lads, if you ask for a joke, don’t give a damn for the wind)) "

Pros:

  • superficiality;
  • simplicity of vikoristannya;
  • light;
  • the designation of the depth of the flood in the Pin-point mode;
  • quick guide to the goal (you can easily walk through the big road).

Cons:

  • sensitive to cold;
  • the cat is shriveled up against the stone;
  • sometimes they appear to be indecent;
  • small clay for a joke;
  • no sound control.

6. The best metal hook for sticking coristuvachiv
Garrett Ace 350


Photo: marvel-construction.com

Nap_vprofess_yna model with a strengthened kotushka can be improved (compared with lower metal shukachs of the tsієї tsіnovaї categorії) characteristics and allow you to see objects at a greater depth.

From the comments:

“I go with him from the spring and the field and the beach. There are few pardons. It's nice for the depths.

"Even more satisfied. Up to the cat of everyday claims. On Otsі lowering by 0.5 m - pracyuє.

Pros:

  • handy;
  • light;
  • superior;
  • strained cat;
  • allow zanurennya near the water;
  • reduced the appearance of other objects;
  • effectively in sight of smittya;
  • dovga autonomous robot.

Cons:

  • to a weak point - a spring at the vіdsіku for batteries.

7. Shorter professional metal shukach
Minelab X-Terra 305


Photo: detectorsource.tripod.com

One more professional metal sounder from Minelab is reminiscent of its superior robot and minimal sensitivity to bad weather minds, temperature drops, and electromagnetic shifts. The X-Terra 305 is called the best among its price category.

From the comments:

"For 3 years of work, I have never been disappointed."

“The best metal shukach, superb, unviable. Bere yak drіbnі ob'єkti ("little pieces"), so і raznі skhovanki i karbi - on decent plіbіnі. Metali vyznaє bezpomilkovo. There were no problems at all. Razvazhuvannya is perfectly balanced.”

Pros:

  • two identification systems (sound, graphics);
  • manual ground balance;
  • v_dbudova v_d pereshkod;
  • pinpoint mode;
  • pіdsvіchuvannya;
  • dovga autonomous robot.

Cons: not revealed.

8. Short professional metal shukach
Minelab X-Terra 705


Photo: tz-9fd.kxcdn.com

Metal shukach legend. Great opportunities plus understanding of management, little power and economy.

From the comments:

“Having taken the 705th, started working “near the field” and casually thought - it’s been a lot of time spent with accessories “for buds”! Trying to walk with him on the already twisted missions - and spend a coin-friend. In one place, I didn’t walk like that.

Pros:

  • victoriousness;
  • garna glybin;
  • high level of discrimination;
  • understand the menu;
  • pіdsvіchuvannya;
  • save batteries.

Cons:

  • high price;
  • the kit does not have a waterproof coil.

9. Cutting metal grinder for gold
Minelab Eureka Gold


Photo: www.minelab.com

Profesіyny, even sensitive metal-shukach. Suitable for revealing gold, winding up the most important particles, be it the middle. Zvіdsi i yogo perevagi, i nedolіki.

From the comments:

“It’s a good fit, but… it’s important to master yoga on your own. І vikoristovuvat yoga raja only far away from the city, cars and electric transfers, near the place and frontier, the wines are not right.

“The device is specific. Appropriate for a person with a weird ear and nerves of steel. It’s too bad to understand the physics of the process of asking, otherwise the hands will fall apart like a shovel. Bring a voice recorder to the raju and record all the sounds for matching with the standard. The control unit should immediately shove it under your elbow, you will be less disturbed.”

Pros:

  • high sensitivity;
  • ground balance;
  • recognition of metals behind the sound.

Cons:

  • high price;
  • decent weight (more than 2 kg);
  • even higher spriyyatlivistvo.

P_vedemo p_bags

In the middle of the ground metal shells, you can see three great groups of accessories: for beginners, for professional and high level drinks, for professionals. In our article, we looked at the best models from all three groups. However, there is no need for professional guidance here in order to help readers understand. Aje dosvіdchenі poshukoviki have already singsongly chosen for themselves the best model. And the axis for the newcomers, I guess, our rating of the best metal shukachivs will turn out to be red. Far away to you poshukіv! And remember: it's not a detector that's joking, but a human being.

Metal under the ground and in freshwater reservoirs, at the crossroads budіvel and in tovshchі concrete will help to reveal specializations of electronic attachment - metaloshukach.

I’ll make a clumsy scheme for picking up the power with my own hands, practically be it for someone, who wants to trim a soldering iron in their hands. Axis like won't work:

Structural scheme of metal shukach.

The standard EG generator vibrates a sinusoidal voltage with a frequency of 50 kHz. The contour coil, which determines the frequency of generation, is attached to the D sensor.

As the oscillator frequency and the resonant frequency of the CF are adjusted, the signal is consumed at the threshold of the PU. It registers a change in the voltage at the input, sees a new warehouse and applies it to the arrow indicator І.

The proximity to a metal object causes a change in the EG frequency. The shards of water are now being adjusted to the resonant frequency of the CF, the voltage at the input of the PU is changing, and the arrow is moving up to the cob of the scale on the cut, proportional to the dimensions of the object and proportionally back to the new one.

Our metal-shukach has a peculiarity - a threshold attachment, for some reason the sensitivity of the scheme rises sharply. Axis yak vono diє.


Fig.2 The shape of the signal at the input and output of the threshold device.

The sinusoidal signal, which is to go to the input of the PU, is interleaved from below (Fig. 2), and the voltage pulses appear on the indicator:

In \u003d Io - Ip,

de Io-riven of the input signal in the calm camp, Ip - threshold voltage, which is set.

Sensitivity of the fit is manifested by the settings:

s = DI / II = DI / (IO-II),

de DІ - change of the sinusoidal voltage at the expansion of the EG, which should be deposited in the area of ​​the object and in the distance to the new one. In fact, s shows how the value is changed by the arrow of the indicator when the sensor-loop is deranged.

Later, by selecting the value of Ip, it is possible to reach the maximum retraction of the arrow of the attachment with any small change in Io. But in real extensions, it is necessary to correct the instability of the elements of the circuit and the frequency of the reference generator.

PRINCIPAL DIAGRAM

The reference generator of pickups behind the circuit of the mnemonic tripoint on the transistor T1 (Fig. 3). Contour coil L1 є sensor prilad. Capacitors C3-C6 are designed for tuning the generator to a frequency of 50 kHz.

Fig. 3 Principal scheme of metal shukach.

Through the expansion capacitor C7, the sinusoidal voltage from the generator goes to the quartz filter. The volume of C7 was chosen small - 5 pF. Tim himself, having poured in the upcoming cascades, practically switched off the generator.

The threshold threshold was selected on the field effect transistor T2. Threshold voltage Ip is set by R5 - R7.

Capacitor C8 smooths out pulsations on indicator IP1. Filter R4, C1 zdіysnyuє razvyazku on zmіny strum between threshold and generators, what you set.

CONSTRUCTION

Appliance from two blocks: vimiruvalny (with sensor) and living. The first one includes the circuit board, indicator, controls and adjustments. Sensor - zhorstky kіltsevy frame, made from orgskla, on which 65 turns are wound in the passage PEL 0.2. The winding is placed in a screen with aluminum foil that is filled with epoxy resin. The sensor of po'yazaniya іz vimіryuvalnym block coaxial cable RK-75.

Block of life to replace five silver-zinc batteries. The voltage of the skin element is 1.25V, the capacity is 2A-year. It is necessary to attach special respect to the frame of the metal shukach. Vaughn is guilty of the mother of a small vag, be zhorstkoy that spring. Otherwise, in case of light blows, inevitable for an hour of work with an attachment in the minds of the floor, the frequency of the generator “goes out” - the metal shocker becomes confused.

To serve as a support for the frame, a calf frame made of orgskla or polystyrene d = 300 mm. The winding is screened with 0.05 mm aluminum foil. But it is not possible to close the screen between itself (a short-circuited coil is established).

The windings of the winding are connected to the cable RK-75 with a length of 0.3-1 m (the screen of the coil is also connected to the braided cable). The place is filled with epoxy resin. The connection of the sensor with the electronics unit is inseparable.

Metaloshukach has a high sensitivity. The arrow of the indicator will appear one by one, if the frame is attached to the disk d=13 div with a winder of 80 div.

Attachment is practically the same reaction whether it be metal. So, for example, steel, aluminium, and brass discs should be given the same arrows on equal surfaces. The stench does not lie down and in the fact that the succulent object is hollow.

Under the hour of work with metal shucks, it is necessary to protect backgrounds. Do not give a background signal to food and peat soil, black earth, wood, water. To this purpose, good deeds are found in fresh water bodies, near wooden booths and on non-stony grounds. A strong background gives ceglu (charred clay has magnetic power) and deak minerals.

Temperature changes are added to the display fixture. To this frame, it is better to place it in a case made of insulation, for example, foam plastic.

For work under water, a metal shackle needs to be trimmed with 10-15 fibers near the water and after that it is sewn up.

On the ground, searches are more often carried out in gloomy weather, or in the evening, in order to avoid falling on the attachment of a direct sony promin.


The scheme of this metal detector is simple, there is one microcircuit, a transistor and a diode diode from the active elements. Regardless of the simplicity of the metal detector circuit, the building reflects the proximity of a mid-sized coin (2.5 cm in diameter) to a coil at a distance of about 10 cm, and large objects made of colored metals, at a distance of more than 1 meter!

Through a small number of parts, the attachment has even less energy (about 5 mA per 9V Krona battery), ease of installation and the presence of problems with any kind of guidance.

Schematic diagram of a simple metal detector

Another sensitive element is the oscillating circuit of the generator, chosen for the classical circuit of the VT1 transistor. With the help of the additional resistor R1, where there is a large amount of water in the loop, the generator is set in a special mode, which is more sensitive to the quality factor of the coil circuit. Remain, with your blackness, lie in the middle, where the contour is known.

Depth zbudzhennya generator determines the constant voltage at point "A".

Shards of voltage lie not in the frequency, but only in the depth of the generator's excitation, but, unfortunately, they do not give the possibility of differentiating the metal, which they appear, behind their magnetic powers, but there are no high powers, but the worst parameter is for reaching the necessary sensitivity.

Constant voltage, which is measured from the point "A", through the screening of the wire (whether it be a brand) go to the two-stage power supply, pick up two op-amps, which enter the warehouse of the DA1 microcircuit.

Capacitor C4 is supposed to be connected not to a deadly bolt, but in the same way, as shown in the diagram - plus eating to turn off a positive whirlpool connection.

Diodes VD1 and VD2 - silicon, with a small back strum. The stench is necessary for swedish renewal podsiluvach mode for revealing great metal objects.

On the OS DA1.3, an audio frequency generator is selected, which is activated when the difference in potentials at the input is changed, which is inverted and not inverted.

For the help of diodes VD3 and VD4, the voltage at the inputs is separated, and the frequency effect is reached. Tse duzhe korisna power, t. to. for the obviousness of this newcomer, the change in frequency helps to determine the value of the subject, and to estimate its value. Diodes VD3 and VD4 are responsible for the minimum voltage drop in a direct switch (for example, you can beat KD419).

An inverter is selected on the DA1.4 element, which serves to increase the loudness of the sound of the piezoelectric emitter.

Alignment of the generator

Alignment of the generator is fixed in this way. Instead of a constant resistor R1, a replacement resistor is installed with a support of 10 kOhm, and the second motor is moved to a position that provides maximum support.

When the support is changed, the voltage at point “A” will also change, as shown in fig. levoruch. As soon as it’s necessary to pinch the change and change more often. It is necessary to fix the moment, if the voltage at point “A” becomes minimal, to reduce the voltage of the replacement resistor and replace it with a constant one with the same support.

The generator is installed on an okremіy small plate in direct proximity to the coil. All parts of the generator may be precise.

The transistor can be practically a p-n-p structure, navit germanієvim with little effort.

Capacitor C1 should be used with a capacity of 5-20 nF (502 - 203) for maximum circuit sensitivity. Sometimes a good result is obtained when C1 is connected not to the winding II, which is the base, but to the wire. Capacitors C1 and C2 are bazhano pl_vkov_ z small TKE.

Coil contour maє diameter 14-16 cm, 260 turns of wire with a diameter of 0.2-0.5 mm are wound on it with lacquer insulation with the introduction of one hundred and sixteenth turn. If the cat is chosen summarily, then the sensitivity of the attachment will appear like a poultice (up to 15-20 cm for a coin).

Let's forgive and finish the carcass of the cat, made from three pieces of corrugated cardboard. The middle fold may have a troch with a smaller diameter, the lower one is extreme. Crim hardness, corrugated cardboard can be indestructible heat and insulating power, which can be victorious to improve the stability of the work and build it.

So, as a generator of picks on chip-elements (smd), it can be easily placed between cardboard balls, which can sharply change the flow to a new temperature drop. Ekranuvati or heat-insulating the seam I will attach not obov'yazkovo.

Priest is guilty of living in a stabilized dzherel. One of the variants of the stabilizer is shown in fig. more. As a stabilizer, you can beat the imported microcircuit L7808 with stabilization for 8 or more analogues.

Option to pay on the side of the road.


P O P U L I R N O E:

    A set of radio components and a handy board for independent folding of the impulse metal detector "PIRAT"

    Metaloshukach PIRAT- one of the most popular simple impulse metal shockers with good sensitivity. Yogo can pick up a radioamator-pochatkіvets.

    As if everything is soldered correctly, the cat is broken without pardon, the details are all right - the scheme starts to work again. From the main ones, there is only one replacement resistor.

    SMALL RADIATION SECURITY DETECTOR ZI LIGHT INDICATION.

    Appliance reacting to the change of ionizing vibration in the people

    expanse of a way to increase or change the number of light sleeps in one hour, for example, for a quid. Vіn is sensitive to the cosmic radiation background, ahead of people about the change in the radiation situation in Denmark, and can know the stagnation, for example, as an indicator of the level of concentration of radioactive elements that are in the materials. It is possible for geologists, commanders of civil defense headquarters, service personnel in radiological installations, at the hour of the night, to be involved in the non-ruinous control of the quality of materials for the help of the ionizing vibrance in the equipment of the noise, if there is little noise. Korisniy and Tim, who is engaged in the protection of nature.

    The principle of operation of the air conditioner

    Split system (air conditioner) at once into the skin booth. Let's take a look - how does a split system (air conditioner) work?

Do-it-yourself diagram of a yakіsny and sensitive metal jukebox with a photo

Proposing before picking metal shukach є rozrobkoy Yuri Kolokolova and Andriy Shchedrin. Denmark is manufactured serially by Meister KIT as an electronic kit for self-folding, but so for bags of radio amator-cob such kits are not available due to their cost or impossibility of delivery. proponably choose the metal-shukach independently, grounding on the other board and DesAlex boards- one of the authoritative authors of this gallery.

Meteloshukach scheme:


The principle of application of this type is based on the stimulation of impulse vortex streaks in the metal object and the vimiruvanny of the secondary electromagnetic field, as to induce striations.

Alarm signal is being transmitted I send the sensor coil to the coil, which is always, and periodically, like impulses. At conductive (metal) objects, damped vortex streams are induced, as if they excite an electromagnetic field, which fades.

The whole field, at its own edge, induces a fading strum at the sensor coil, which is recorded by the primary part of the circuit with an advancing indication - light and sound. Fallen in the presence of conducting authorities and the expansion of the object, the signal changes its shape and triviality. Use this type to have your own advantages and shortcomings - low sensitivity to mineralized soil and brackish water, but with this type of filthy selectivity for crystall metal and great strumosozhivannya.

Short technical characteristics of this metal shukach:

-sensitivity 18-20cm on a coin with a diameter of 25mm and up to 100-150cm on large metal objects

- life at 9 to 15 volts, with strumming up to 100mA

- Even a simple sensor that does not require any specific adjustments paid fee the firmware and the little ones are in DesAlex" and in the LAY format are in the archive). Another important step when folding is the firmware of the ATtiny2313 microcontroller, which is an analogue of the old AT90S2313, taken from the machine. BITI TROTVITITITITITITITITION WITH THE RUSIN: Put the checkmarks in the Vikkoksi SUT 1, CKSEL 1, CKSEL 0 - In the same way, the boxes are not set. The next time the warehouse is extended. At the same time, the tsarunski are sophisticated at the same time. designs.

At the sight of the sensor otherwise, the ring can be a larger ring with a diameter of 20 cm, as in the photo of the first given article, so it can also have a wider sensor.

Oh well volume


The simplest sensor is easy to prepare. The basis of yoga is a coil of 27 turns of a single-core dart in enamel insulation with a diameter of 0.5-0.8 mm, wound on a mandrel with a diameter of 18-25 cm.


For example, I would like to say that if you want information about the attachment, it has long been seen from the authors' site, but it is worthy of being popular with radioamators and sound systems as an excellent and silent helper.


In principle, there are no particular problems with self-contained folding, but it’s your first attachment from MK zastosuvannya. Read the technique of customization in the discussion on a special forum dedicated to Tracker PI-2. Author of the article: Elektrodich.

Firmware in hex format can be downloaded sent

Marvel at the schemes of metal shukachiv, writing about yaks

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