This one differs by using an Arduino to read from the metal detecting coil. The circuit starts with an oscillator that produces a signal of about 160 kHz which is constantly measured by the Arduino.

His valuable and sweeping video walk-through is hiding after the break. A Very Low-Frequency (VLF) detector uses two coils, one to emit and one to receive. They are overlapped just enough so that ...

An international collaboration headed by researchers in the Department of Physics has shown that additive manufacturing ...

Considered an "old reliable" by hobbyists, the Garrett Ace 300 is an entry-level metal detector with meat-and-potatoes features. It has a large screen, a water resistant coil, and five search ...