How do you make a simple metal detector circuit?

Metal Detector Circuit Components

  1. +9 supply voltage.
  2. 555 IC.
  3. 47KΩ resistor.
  4. 2.2µF capacitor (2 pieces)
  5. Speaker (8Ω)
  6. 170Turns of 10cm diameter coil (any gauge would work)

Which circuit is used in metal detector?

This is a circuit RLC consisting of a 47 K resistance, a 2.2 μF capacitor, and an inductor of 150 turns. It is the metal detecting component of this RLC circuit. Today, as previously stated, there is a high induction value for the metal core inductor over an air core.

How do you make a homemade metal detector?

To build a metal detector, start by getting a portable AM/FM radio and a calculator. Then, tune the radio to the highest band on the AM setting. Next, turn on the calculator and position the radio and calculator back to back until you hear a steady, dull tone.

Which coil is best for metal detector?

6 Best Metal Detector Coils

  • Teknetics 8in. Search Coil (Greek Series)
  • Nokta Makro IM28 DD Search Coil (Impact)
  • Minelab DD Commander Search Coil (GPX / GP / SD)
  • JW Fishers Search Coil with Connector (Pulse 6x/8x)
  • Garrett Mono Search Coil (ATX)
  • Coiltek Elite Camo Mono Search Coil (SD / GP / GPX)

How can I increase the range of my metal detector?

How to Increase the Depth of a Metal Detector (Range Adjustments…

  1. sweep the coil close to the ground.
  2. increase the sensitivity setting.
  3. reduce the discrimination setting.
  4. install fresh batteries.
  5. upgrade to larger coil.

How do you make a 555 IC metal detector?


  1. IC 555.
  2. C1 1nf Capacitor.
  3. C2 2u2(2.2uf) NPC Capacitor.
  4. C3 10uf NPC.
  5. C4 2u2(2.2uf) NPC Capacitor.
  6. R1 47K.
  7. 0.2-0.5mm Magnet wire/Copper enamelled(Motor winding wire) ,300turns & 6 cm diameter of coil.
  8. Battery 9v or 5V.

How do you make a metal detector more powerful?

How To Make a Gold Detector More Powerful

  1. How To Make a Gold Detector More Powerful.
  2. 1- Use the gold detector on wet ground:
  3. 2- Check the battery:
  4. 3- Use headphones:
  5. 4- Update the programming of the gold detector:
  6. 5-Use the correct coils:
  7. 6- Adjust the settings:
  8. 7- Don’t forget to see the user manual:

Can you make a living from metal detecting?

In order to make a living from metal detecting, it will take being creative and doing more than just swinging your coil over a few coins or rings if you hope to earn enough money to live sustainably, because fact of the matter is, just solely metal detecting will not provide a living for the majority of us.

How deep can a metal detector detect?

Most metal detectors can detect objects about 4-8ʺ (10 – 20 cm) deep. In ideal conditions, a mid-range metal detector can reach 12-18ʺ (30-45 cm) underground. Some specialized detectors can go as deep as 65′ (20 m).

Does a bigger detector coil go deeper?

A metal detector can detect larger targets deeper than smaller ones. This is because larger objects have more surface area, which creates more disruption in the electromagnetic (EM) field generated by a metal detector.

How do you make a metal detector stronger?

To increase the depth of a metal detector, you can:

  1. sweep the coil close to the ground.
  2. increase the sensitivity setting.
  3. reduce the discrimination setting.
  4. install fresh batteries.
  5. upgrade to larger coil.

What frequency is best for metal detecting?

The best frequency for metal detecting is somewhere in the range of 5 kHz to 15 kHz. This range is where most general-purpose metal detectors are tuned too, and also the easiest to manage for beginners.

What frequency is gold on a metal detector?

14 kHz

Gold can be found at 14 kHz and higher.

What is metal detector sensor?

Metal Detectors/Sensors are electronic or electro-mechanical devices used to sense the presence of metal in a variety of situations ranging from packages to people. Metal detectors can be permanently installed or portable and rely on a number of sensor technologies with electromagnetics being popular.

How do metal detectors work?

How Do Metal Detectors Work? Metal detectors work by transmitting an electromagnetic field from the search coil into the ground. Any metal objects (targets) within the electromagnetic field will become energised and retransmit an electromagnetic field of their own.

How can I make a cheap metal detector stronger?

Why won’t my metal detector detect gold?

Rich gold ore where the gold is finely dispersed in the rock will be hard to detect or undetectable. Wiry or spongy masses of gold are hard to detect. Jewelry hunters run into this when trying to detect lost necklaces.

How do you become rich with metal detecting?

The Ultimate Guide to Making Money with Metal Detecting – YouTube

Is it better to metal detect at high tide or low tide?

Generally the best metal detecting takes place at the 24 hour period lowest tide.

Can you find diamonds with a metal detector?

This leads to an important point: metal detectors will not detect non metal items such as gemstones, diamonds and pearls. What a metal detector can do is lead you to indicator minerals, which are used by prospectors. Prospectors follow the indicator trail back to gold or the volcanic pipe which may contain diamonds.

Can a metal detector find gold nuggets?

The answer is YES, they all do. Some do it better than others. Some detectors like the Minelab Gold Monster or GPZ 7000 are specifically designed to find small gold pieces (which most naturally occurring gold is). When it comes to finding gold rings, just about any metal detector will work.

How can I make my metal detector more powerful?

How do you increase the depth of a metal detector?

What makes a metal detector go deeper?

The larger the coil, the deeper it can detect a target. But there’s a point at which the EM field generated is so large that the detector won’t detect small objects. For coins and rings, that threshold is a search coil more than 14-15ʺ (35 – 38 cm) in diameter.

What frequency is gold found at?

Gold can be found at 14 kHz and higher. At frequencies between 3 kHz and 7 kHz, silver, copper, and brass can be found. At frequencies between 4 kHz and 8 kHz, nickel and aluminum are most readily found.