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@Robin
I see a reference to both Cathode and Anode used in code snippet. Is the IR diode connected across both these pins? Backwards? Lacking pullup? Need a current driver like a 2n2222?
What is the pin mode set to? I don't see those lines of code?
or use
dump()on the command line.Potential conflict L41 and L47 :: Using both analog and digital on the same pin.