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Surf pi 1.2 not working properly
So i assembled surf pi 1.2 kit and tuned the offset pot so it reads 0v. Made a coil from solid core copper wire with plastic insulation it's 1.7ohms at 22 turns.
Started testing my setup with regular metal objects and it worked ok, but with gold is a different story... It just doesn't detect any gold. Tried playing with
the delay pot it just doesn't seem to make any difference. After that i tried like 6 different coils with different wire/gauge/wounding etc... Still it doesn't detect
any gold. So at this point i think it's something wrong with the detector itself.
I have access to an oscilloscope, but i don't know what to expect at those TP1 and TP2 test points. Maybe someone could post a waveform of properly
working metal detector?
Started testing my setup with regular metal objects and it worked ok, but with gold is a different story... It just doesn't detect any gold. Tried playing with
the delay pot it just doesn't seem to make any difference. After that i tried like 6 different coils with different wire/gauge/wounding etc... Still it doesn't detect
any gold. So at this point i think it's something wrong with the detector itself.
I have access to an oscilloscope, but i don't know what to expect at those TP1 and TP2 test points. Maybe someone could post a waveform of properly
working metal detector?