the hardware is like this...there is an image sensor fixed on an arduino pro board,,,its atmega is programmed...now i want to connect arduino pro board to robotino...arduino pro board will be on robotino wherever it moves....now the analog output of arduino pro board should go to the analog input pin of the robotino..robotino needs 12V supply..now how should i connect arduino pro board to robotino analog ip pin electrically,,THE ARDUINO BOARD WILL BE ON ROBOTINO...