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Notes:
Pin 10 is not PWM capable. 0-9 are.
Pin 0 and 2 must not be held low at boot. Be careful not to attach pull down resistors to them (pull-ups are fine) unless they are only active after power up.
Pin 1 and 6 must not be held high at boot. Be careful not to attach pull up resistors to it (pull-downs are fine) unless they are only active after power up.