i'm trying to do a pizeo buzzer on PWM_3, and I'm getting nothing. when moving to PWM_2 (and moving the wire from pin 20 to 19), it works fine.
is there anything special about PWM_3 that i need to be aware of? is it possible I have a dead pin?
i'm certain my trivial circuit is correct, as it works on my Netduino 1, and works on PWM_2.