Piezoelectric not sounding Arduino Mega

Using Arduino Audio
1

Hi, I am building a drum midi module (microdrum SW) with a arduino Mega and having some problems with the piezoelectric not working. When touched with my fingers there is a light in midi software (AD2) that reacts. But if i hi them they do nothing.
I tried grounding all the unused analog pins. The piezo signal goes thru a 1M resistor and a 5.1 Zener Diode conected in paralel with ground. Any ideas?

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The piezo characteristics.

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Thanks

2

Hi,
Have you got some simple code to just test the inputs as you hit them?
Have you got a DMM?

Please post a sample code that checks the inputs, forget about midi for the moment.

Did you write the code you are using?

Thanks.. Tom... :smiley: :+1::coffee: :australia:
PS, A hand drawn circuit would have been better, then you could have drawn a MEGA.

3

Thanks Tom.

I finally figured it out. Everything was right. The probleme were the piezos. Which apparently work only as skpeakers. I connected a roland pad and tested every input and works prefectly.

cheers

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