Hi guys, I am right now trying to get a piezoelectric button to work on pin 2 as an interrupt. first this is my code: void funcBut1(); volatile bool but1_int; bool but1; void setup() { attachInterrupt(0, funcBut1, RISING); //0 = interrupt on pin 2 pinMode(LED_BUILTIN, OUTPUT); pinMode(A0, …

100-500ms pulse for external Interrupt

6v6gt April 11, 2018, 2:34pm 2

Have you a pull down resistor ( say 10K) on pin 2 ? This would be appropriate for a "RISING" edge.

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