The metal detector circuit shown here must represent the limits of simplicity for a metal detector, yet the design works surprisingly well. It uses just one 40106 hex Schmitt inverter IC, a capacitor ...

It was a perfect job for a metal detector, but since they didn’t own one, ... (BFO) circuit. It’s not the greatest design, it might even be the worst, ...

[vonPongrac] stumbled upon this handy guide, a free eBook on 50 555 Circuits, which contains many cool project ideas, including a simple metal detector circuit.

Electronics and circuits How the metal detector was made Using the metal detector. The challenge Rough Science has a gold theme running through it, ...

A while ago I bought this non-contact metal detector module from an online store to see how it functions, and what I need to build it. The ... Both items together will help your understanding of the ...