I have a pin (34) setup as an input. This pin is connected to a triac opto that generates a clean signal. I have it setup to generate an interrupt on falling edge. This is so I can detect zero crossings that will be used to fire an output triac. The problem I am having is that with each pulse the in...

Any suggestions for configuring this? I haven't seen any examples that do anything similar.

I am designing a lighting controller and I'm having a bit of trouble figuring out how to handle the fast timing needed for phase control. The circuit has four triacs. The AC signal is also being fed back to an input through an optocoupler that is used to detect zero crossings. I have the zero crossi...