Almost everyone understands to some extent what a metal detector is, what it is intended for. In fact, this is a device with which you can detect metal objects deep underground. It is used not only to earn some money from the sale of scrap metal, it is also used by sappers to detect mines or other explosive objects.
Not everyone can afford to buy such a device, even if it is used. Its cost varies depending on the depth of scanning, convenience and brand. There are many varieties of such devices. All of them differ not only in their characteristics, but also in the type of construction. Therefore, it is best to learn how to make a metal detector with your own hands at home, and then try to make it.
Of course, if you do this for the first time, then difficulties and misunderstanding may arise. Therefore, you need to thoroughly prepare for this: read several articles, ask friends how they did it, and only then buy the missing items.
It is also worth noting that the search for metal is unpredictable activity. That is, today it can be lucky, and then for several weeks there is nothing. Therefore, everyone who is going to engage in this kind of activity needs patience. If you plan to find large volumes of iron objects every day and thereby improve your financial condition, you need to weigh it well again, and only then proceed with creating the metal detector.
90s
Thanks to the metal detector, in the 90s it was possible to live peacefully without basic work, since this device brought a lot of money. Young people, having constructed a metal detector, often went around the vicinity of large industries and abandoned factories, trying to find coins, jewelry or spare parts from broken equipment.
Already in his youth, many teenagers knew how to make a metal detector at home. Walking through the abandoned ruins for several hours, you could find many useful things. No one was ashamed of this way of earning, because this activity brought good profit.
Let's look at how to make a metal detector at home. Perhaps in our time luck will smile at you.
Varieties
As we have already found out, there are various types of metal detectors. They differ not only in characteristics, but also in design.
The most primitive is ultra-low frequency. Almost every student could make this device. The fact that its assembly does not require much effort and knowledge, and the fact that its design is primitive, does not make it inefficient. If you correctly configure this device, then the results will be amazing. The most important thing is patience.
The second variety is an impulse finder. This unit has a deeper scanning environment. He is able to discover coins, figurines and other valuables at great depths. These instruments are used by experienced treasure hunters.
The beating metal detector is appreciated in that the detection depth reaches maximum marks. This device will find any metal object or mineral at a depth of more than one meter.
Another view is a radio detector. Its detection depth is less than a meter, so its design is very simple. Often, pioneers, beginners, use this detector. For experienced diggers, such a device is not suitable.
How to make a metal detector yourself
The most important part for a metal detector is a prefix. The long-wave radio is perfect for this case. To assemble it, you need to draw the simplest electrical circuit, consisting of:
- Generator.
- Coils
- Resistors.
It is fixed in order. First, we attach a circle cut from plywood to the handle. After that, we attach the prefix to the other end of the handle and install the handle. It is necessary for a comfortable and long use of the device.
Customization
After installing the radio, the device must be attached to the coil. We already said above that you need to worry about a convenient pen that will help keep the seeker for a long time. In practice, such a simple detail is very important.
Having fixed the handle to the radio, you can begin to tune it to the desired frequency. In our case, it is 140 kHz. As soon as the first beep sounds, the setup is completed. You can experience it.
To check the performance of the metal detector, you need to bring it to any metal object. If you hear a change in tonality, it means that the device is configured correctly.
Metal detector "Pirate"
This is a fairly popular model among both amateurs and professionals. How to make a Pirate metal detector? Everything is simple. Fortunately, you do not need to re-program the microcircuits, since they are all ready for a long time. It is only necessary to correctly assemble all the details.
The circuit for this finder is available on the market. All the parts that will be needed are cheap and common, so there will be no problems with their purchase. The “Pirate” scheme surpasses many other analogues in its characteristics. Let's figure out how to make a metal detector according to this scheme.
You will need:
- Microcircuit NE555 (you can use KR 1006VI1).
- Transistors NPN.
- Material for the body of the device.
- Transistors series IRF40 and BC547.
- Chip K157UD2.
- Insulating tape.
- Tools.
- Resistors
- Diodes.
- Ceramic and electrolyte capacitors.
The circuit has two main nodes: a transmitting circuit, consisting of a pulse generator, and a transistor switch. The coil should be 190 mm in diameter, and 25 turns on it.
First you need to create a circuit board. Then install electronic elements on it. Connect the power source. Assemble the coil.
If you assemble this metal detector correctly, then there is no need to configure it.
Conclusion
Summing up, we can say that to assemble almost any metal detector you need to spend very little effort and make an effort. To learn how to make a metal detector, you need to look at explanatory materials on this topic. In the Internet age, this is not a problem.
How to make a metal detector? In this article, we examined the two most popular options, which are preferred not only by beginners, but also by experienced professionals. All the necessary equipment that may be needed can be found in almost any market. You can also use old electrical appliances that have circuits, such as a radio, tape recorder, television, and so on.
You might be thinking, “Why know how to make a metal detector if you can buy it in a store?” Yes, but the cost of such devices is quite high. For example, the price of a simple HOOMYA MD-1008A with respect to its capabilities and functions starts from 2900 rubles, and for a professional Marko Multi Kruzer you will need to pay more than 40 000 rubles.
It is much more profitable to make a metal detector yourself.
If you manage to make such a device with your own hands, then you will not only enjoy the high-quality work performed, but also save a decent amount of money.