Circuit taken from here http://arduino.cc/forum/index.php/topic,17106.0.html tlc's are powered by the 5v. V1 is also 5v. 12v going to V2 and the arduino.
Circuit taken from here http://arduino.cc/forum/index.php/topic,17106.0.html tlc's are powered by the 5v. V1 is also 5v. 12v going to V2 and the arduino.