Is it possible to get "close"signal from a piezo sensor?
I would like to use Xnote as a Steel Challenge Timer. I need to capture the close from stop plate hit.
As the plates are fixed ( they do not fall as poppers ) the impact itself should produce some vibration that could be captured by a Piezo sensor attached to backside of the plate.
Can I connect the piezo sensor directly to pins 7 and 8 from a female DB9 connector?
Any clue if this may work or would it be necessary to add some circuitry of some kind?
Thank you