ValueError: The channel sent is invalid on a Raspberry Pi - Controlling GPIO Pin 2 (BOARD) using Python causes Error
Question: So I have a tiny little fan connected to pin 6(Ground) and pin 2. I am trying
to manually start and stop the fan when needed but I am getting this error
when trying:

ValueError: The channel sent is invalid on a Raspberry Pi

Here is my code that I am executing as root. It seems to be working on other
pins but not Pin 2

    
    
    import RPi.GPIO as GPIO
    
    GPIO.setmode(GPIO.BOARD)
    
    GPIO.setup(2, GPIO.OUT, pull_up_down=GPIO.PUD_UP)
    

I am not sure how to access this pin. Is there something I am doing wrong?


Answer: It could be something stupid, i was looking exacty the same. It seems there
are two "modes" in the GPIO. _Change GPIO.setmode(GPIO.BOARD)_ to

    
    
    GPIO.setmode(GPIO.BCM) 
    

It worked for me on a clean installation of Raspbian

