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.

Metal detecting is a fun pastime ... A Very Low-Frequency (VLF) detector uses two coils, one to emit and one to receive. They are overlapped just enough so that the reception coil can’t see ...

Before you begin searching for buried treasure with a metal detector, you need to learn the laws governing such finds and which detector is right for you.

An advanced metal detector coil encompasses the diameter of the sensor head. Passing current through the MD coil creates an electromagnetic field that induces an electrical current in any metal ...

While shopping for a metal detector, you need to take into account a number of key factors, particularly the type, coil size, weight, and extra features like backlight and frequency customization.

Laznicka explains that a metal detector operates by emitting electromagnetic fields through a search coil, which interacts with the ground to locate metallic objects. When the coil encounters ...

The beeping of a metal detector is music to the ears of Lee Houser ... But the magic behind the machine? “There’s a coil at the bottom of it and it sends out an electromagnetic signal into ...