Posted in Microcontrollers Tagged attiny13, diy metal detector, metal detector, pulsed induction DIY Metal Detector September 28, 2013 by James Hobson 15 Comments ...

The metal detector comes to us from [mircemk] who is known for building simple yet effective metal detectors. Unlike his previous builds, this one uses only a single integrated circuit, the TL804 ...

Professional metal detectors are simple but require a bit of work to make. But you can build a pared-down handheld detector using a calculator, an AM/FM radio and some masking tape ...

Metal Detector by Jonathan Hare. Iron, gold and other metals What is a metal detector? ... connected with wire underneath the homemade board, and placed in the waterproof box.

We’re not sure how legit this is, but it’s easy to test out (if you still have an AM radio around). Instructables member RazorG has built a metal detector from just a radio and a calculator.