If you are using Arduino (and most compatibles) , digital pin 8 is clearly marked on the board.
If you have built your own board, the pin assignments can be found here: http://www.arduino.cc/en/Hacking/PinMapping168
If you are using Arduino (and most compatibles) , digital pin 8 is clearly marked on the board.
If you have built your own board, the pin assignments can be found here: http://www.arduino.cc/en/Hacking/PinMapping168