Real radio amateurs are not those citizens who seek to save their savings on the purchase of new equipment, but those who really want to bring all the existing parameters of a particular unit to the maximum. This statement also applies to those who plan to make an underwater metal detector with their own hands. This option is only appropriate if the master has the necessary skills. The result of the manipulations will depend on how high-quality materials were prepared in advance.
Description
Building an underwater metal detector with your own hands is not only easy, but also financially profitable. With the help of a ready-made device, you can find various objects at the bottom of a river, sea or lake. The unit functions perfectly even in conditions of poor visibility and strong noise. Experts identify the following features of the metal detector:
- The product is profitablediffers from the classic unit by the duration of being under water. Some experts prefer to go up to the throat with a metal detector, which is why it is necessary to take into account the optimal immersion depth of the device. It is necessary to foresee all the nuances in advance.
- To make a high-quality underwater metal detector with your own hands, you need to configure the product to search for non-ferrous metals.
- Precise recognition of tiny objects: rings, earrings, chains. It is these products that are the main prey of underwater searchers.
These three criteria must be taken into account by the master during the assembly of equipment.
Main nuances
To make an underwater metal detector with your own hands, you need to prepare a PETV wire 0.5 mm thick in advance. The master should get 25 turns. You can experiment with the wire and the shape of the coil. For a classic product, you need 25 meters of PETV. To build a control unit and a rod, you need to use a stainless steel or plastic tube. This requirement must be observed, as other materials under water will be subject to the negative effects of corrosion. If the master builds a stainless steel and plastic structure, then the finished product will compare favorably with all analogues with a long service life. The main frame should not be too light, otherwise it will constantly pop up. In order for a self-made underwater metal detector to be reliable and comfortable to use, it must cope withthe negative effects of s alty sea water.
Required tools
You can make an underwater metal detector with your own hands in just a few hours, if you follow all the recommendations of experts. A universal unit can be made if you prepare the following tools:
- duct tape;
- soldering iron and solder;
- PCB;
- sharp knife and scissors;
- PETV wires with parameters 0.5 mm;
- basic set of electronic components;
- silicone sealant.
Detailed instructions
Building an underwater metal detector with your own hands is not so difficult, the main thing is to start by preparing the printed circuit board. After that, all the necessary electronic elements are carefully installed on it. It is better to solder the details. The master will have to connect the power source. It should be a powerful rechargeable battery, not a conventional battery. The prepared board with the power supply is installed in a sealed container. If necessary, you need to bring LED bulbs to the surface. All joints must be treated with silicone sealant. The container is fixed on a pre-assembled rod. It is necessary to wind the search coil with high quality. For these purposes, a 3-liter jar is ideal. The body must be plastic. The wound wire is carefully filled with silicone sealant. It remains only to solder the leads from the coil to the stranded wire.
Maximum tightness
Experts recommend filling all existing gaps with silicone sealant. For the control unit and the coil, you can use classic polypropylene pipes of a suitable diameter. Build a high-quality bar from an old fishing rod and reliable adapters. For the power supply box, you can safely use the tube from the sealant. At the final stage, the master will have to install waterproof ports for the connectors. Due to this, it will be possible to connect underwater headphones for a metal detector.
You can build many interesting and high-quality products with your own hands. You just need to follow the classic scheme. With a ready-made metal detector, it will be possible to dive to great depths. The unit must have s alt compensation, as well as a comfortable indication. The use of a classic display in this industry is unjustified. It is best to make a fixture like an amphibian or underwater detectors. Thanks to this, it will be possible to recognize valuable metal products on the ground and under the water column.
