Lowest comparator voltage seems to be 0.2v, which may work. Fixed Vref is 0.6v. Thanks for the suggestions.
George - definitely should be able to detect that. You may need to glue the disk to the surface being tapped.
Lowest comparator voltage seems to be 0.2v, which may work. Fixed Vref is 0.6v. Thanks for the suggestions.
George - definitely should be able to detect that. You may need to glue the disk to the surface being tapped.
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