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Piezo transducers

pyrohaz

Oct 28, 2012
33
Joined
Oct 28, 2012
Messages
33
Hey guys,
I'm essentially using piezo sensors to detect "a tap", quite like in electric drum kits. After testing, the piezo in parallel with a 330k resistor produces an acceptable "RC" and as an input to an arduino, can produce a surprisingly clean digital pulse to trigger arduino functions in this instance, the bouncing of the voltage isn't a big problem.

The only thing is, I would like to know the output voltage of these piezo sensors with a 330k resistor in parallel. I would use my oscilloscope but I currently am not going to be at home for the next few weeks (education and what not!) and was wondering if anybody would mind taking a few snap shots of the waveform of them tapping a piezo transducer? OR anywhere that I can obtain this information, I want to know if it would be sufficient in summing 4 sensors together through a DL or gate (with one 330k resistor as the diode load) and using this to drive a RTL inverter (using a mosfet instead of a transistor!).

Any help would be appreciated! :)
 
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