Just to rule out the piezo itself, since you have it already connected on one of the ATTiny PWM pins, can you get a sound from it using analogWrite, as an example:
analogWrite(3, 100);
Geoff
Just to rule out the piezo itself, since you have it already connected on one of the ATTiny PWM pins, can you get a sound from it using analogWrite, as an example:
analogWrite(3, 100);
Geoff