January 31, 2010
about 5 years ago
I received this from my Arduino starter kit. How much voltage are you suppose to be getting from this thing?
And what is the best way to use it with an Arduino?
I checked out this
it and a couple of other google finds all basically use the a piezo element as a voltage source and pull down resistor. At least I think that’s what’s going on here.
Regardless, wired up as above and a good whack with a finger only gives me an analog reading of at most 500 on the Arduino, mostly much lower readings of like 10-100. My meter hooked directly to the leads of the sensor only puts out like .1 volts max from a thump. I’m not sure if there is a problem with my wiring or my meter (maybe the voltage spikes too quickly for the meter to read?) but I’m not getting anywhere near 90V from this thing.
No public wish lists :(
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