Quote:
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Originally Posted by Richard
Quote:
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Originally Posted by Alan Anderson
I know first-hand that a simple capacitive detector is discriminating enough by itself to tell the difference between flesh and damp plywood, ...
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First-hand? I hope you still have both hands intact! |
I built a touch-sensing light switch about thirty years ago, using a 60 Hz probe signal (instead of the much more sensitive high-frequency signal employed by SawStop). My sisters and I had fun trying to see just what would trigger it. Keys, coins, and coat hangers did. Wet wood did not. Pencil lead was hit or miss.