well, fuck me, i bow to your superior knowledge
To be fair, I have no idea how they work. I would say "magnets", but I think that's how they find metal!
Changes in density. Electronic equivalent of tapping the board and listening for the pitch to change.
@Ramsaye started
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To be fair, I have no idea how they work. I would say "magnets", but I think that's how they find metal!