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Highly sensitive metal detector
How to make a highly sensitive metal detector with your own hands at home from improvised materials. Assembly techniques, visual photos, boards, diagrams and drawings of homemade metal detectors and metal detectors

Today we will talk about how to make a highly sensitive metal detector with your own hands at home from improvised materials. We will also consider assembly techniques, visual photos, boards, diagrams and drawings of homemade metal detectors and metal detectors with different principle of action

The work of the metal detector is based on the principle of magnetic attraction. This creates a magnetic field through the search coil and then heads the MP into the ground. The second coil of the metal detector receives the reverse signals and reports the find with the help of a tonal alarm. At the moment when the coil is held above the ground and a metal object is detected next to the magnetic field, the tone will change the tone. This change in the field means that you are near the search object.
It is necessary to take into account the fact that the larger the coil, the more sensitive the metal detector becomes, although in modern devices it is often necessary to install small search heads, but equipped with powerful schemes. But how to make it yourself and for free?

There are four types of metal detectors:

1. Super-low frequency (SDF) finder: the easiest of home remedies, to make it is not very difficult. It has the ability to track various metals (with special adjustment). The most widely used type.

2. Metal Pulse Detector (ID): A deep instrument capable of detecting objects that are very deep. Popular among professional gold seekers because it is mainly tuned to non-ferrous metals.

3. The beat detector: can detect any metal or mineral in the range of its pulse (to a depth of up to 1 meter), if it is made with your own hands, you can distinguish metals only of a certain group. This is the cheapest and easiest type of device.

4. Radio detector: can detect metals hidden up to 1 meter in the ground. It is very quickly made, within a few minutes, it is the best option to demonstrate the principle of the device or to present it at the fairs of children’s creativity. He’s not that popular.

Regardless of the type of metal detector you plan to make with your own hands, most detectors have a similar structural assembly. From what and how you can make the most primitive metal detector.

1. Control box: consists of a board, microdynamics, a rechargeable unit and a microprocessor.

2. Holder: connects the command block and the coil. It often reaches the magnitude of human growth.

3. The magnesium coil: it is a detail that feels metal as well as a source of MP. Also known as “search head,” “loop” or “antenna,” consists of discs.

How to use metal detectors to find gold
4. Stabilizer (optional): is needed to monitor the position of the detector.

Making a high-frequency metal detector

The high-frequency metal detector differs from other models in that it uses two coils at once:

· transmission coil: the outer contour of the coil in which the wires are located. Electricity is transmitted through these cables, which creates a magnetic field.

· Receiving coil: coil with a wire current. This part accepts, recycles and amplifies the frequencies coming from the metal in the ground, and therefore signals about the discovery of the treasure.

Step-by-step instructions, photos and diagrams for beginners how to make a high-frequency metal detector:

1. We need to assemble a team block. It can be made from a computer, a laptop or a radio.

2. Find the highest AM frequency in the radio. Make sure the receiver isn’t tuned to the radio station.

3. Now we collect the search head. To do this, cut two circles from the usual thin plywood sheet. One is about 15 centimeters in diameter, the other is slightly smaller - 10-13. This is to ensure that one ring can enter another. Now it is necessary to cut small wooden sticks, for the parallel arrangement of the rings relative to each other.

4. From these plates we take 10-15 turns from the enamelled copper wire by a section of 0.25 mm from the outer circle. Now you need to attach the structure to the block.

5. Connect to the pole. Place the head at the lower end, the radio detector is upstairs.

6. Now you need to turn on the radio frequency, you need to hear a faint tonal sound. You may need to work a little bit with the radio receiver setup. If necessary, you can attach headphones to the set, for better audibility.