I am using Serial.begin(9600) to communicate through the USB port to run AppleScripts. That part works fine.
However, this seems to make pin 1 unusable when configured as pinMode(whatever, INPUT) for an external switch.
I have searched the docs and this forum, but have not found an answer.
Does running Serial.begin automatically set up pins 0 &1 as a serial port?
If so, can this be changed?