I'm trying to synchronize a camera with a very fast blinking LED (that I cannot control) which runs at about 230 Hz. So when the Arduino detects a rising edge from the LED voltage supply (which rises from 2,2 to 3,2 V, so logical 0 to 1) it starts an interrupt routine which sends a trigger signal t…

interrupt starts at different times depending on upload time of program

KeithRB April 7, 2014, 8:14pm 7

That is 800 uS, not mS. It should be OK, given there is nothing else going on in the code.

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