I'm trying to understand interrupts in the UNO board. I've read the attachInterrupts function docs . For this board there are two interrupts: INT0 in pin #2 and INT1 in pin #3. The third parameter to this function is the MODE, which according to the docs can take four different values in this boar…

Strange behaviour using interrupts

system April 17, 2014, 2:12pm 3

I'd be very wary of using anything but very simple pin or variable manipulation in an ISR - how about using the LED on pin 13 for your indications?

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