We all know 555 timers are very useful and pop up in a wide range of projects, but did you know a metal detector is one of them? [vonPongrac] stumbled upon this handy guide, a free eBook on 50 555 ...

Building a simple metal detector circuit using IC 555 and buzzer.circuit design and schematic diagram to build metal detector that could detect metals.With over 80 different electronic circuits that ...

Integrated circuit metal detector at home and abroad in a small patent or patent application,known technical solutions are used DSP chips and high cost.SIMPLE PRECISION METAL DETECTOR SCHEMATIC ...

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 ...

We all know 555 timers are very useful and pop up in a wide range of projects, but did you know a metal detector is one of them? [vonPongrac] stumbled upon this handy guide, a free eBook on 50 555 ...