It's the same as digital pin 7. I think we included it because it's used to reset the bluetooth module on the BT board, so it could be handy if we ever made a bluetooth module to go with the mini.
It's the same as digital pin 7. I think we included it because it's used to reset the bluetooth module on the BT board, so it could be handy if we ever made a bluetooth module to go with the mini.