CCO Metal Detector | GoodFidelity
GoodFidelity
CCO Metal Detector
CCO Metal Detector
This is the CCO metal detector in operation, I'm using the republished modified circuit which uses a 4069 hex inverter and a TL071 to replace the AM radio in the original circuit.The coils are not the full 50 turns and made from the wrong gauge of wire also, they have yet to be mounted properly on something. The sensitivity of the circuit is too high, touching any parts or wires will cause random chaotic frequency shifts, even shielding the wires doesn't work since the main problem here is induction and not em waves. When complete, all parts of the circuit will have to be made rock solid so that they can't move relative to one another, other wise using the detector will be impossible.The pcb was made by grinding away the copper foil with a dremel and a small broken drill bit. Crude, but it works.
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