How to Make a Cheap and Simple Metal Detector: I'm a big fan of pirates. You know how they hunt for treasure. But hunting for treasure isn't always easy. BUT I have a thing that might help you. The SIMPLEST and CHEAPEST metal detector.
This unique metal detector is made of just five ingredients - cheap chip, AC condenser, two search coils and the earphone. But not regardless of the simplicity it has pretty good options. This scheme refers to the detectors. And while it contains some nodes from other detectors, it is different from them. It is no exaggeration to say that the characteristics of the scheme corresponds to