Creating a Pulse Induction (PI) metal detector is an exciting project that combines electronics and programming. Here's a step-by-step guide to help you build one:
Pulse Induction metal detectors work by sending a short pulse of current through a coil of wire. After the pulse ends, the coil "listens" for the echo of the pulse. If there's a metal object nearby, it will induce a current in the object, which will then produce its own magnetic field. When this field collapses, it induces a small current in the coil, which can be detected.
- A coil of wire (for the search coil)
- An oscillator (to create the pulse)