This is just a silly idea for an arduino debugging tool. I made a function which outputs a 32bit number as morse code on the Pin13 LED. When I call it from my code using the __LINE__ macro, it tells me the line number being executed in the code. In the video, look for the LED on the board to flash dash-dash-dot-dash-dot-dash-dot, which means 1101010 or "line 106" :) Code added to the comments.
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