I found a tutorial online for a 4X4 matrix. So I built it and all my LEDs are wired properly. Here is the link. http://minipenguin.com/?p=107 I think there may be an issue with the code. I think I have it wired correctly to the arduino. Anodes in rows and cathodes in columns. The diagram is starigh…

4X4 Matrix

nickgammon May 14, 2012, 9:29pm 7

FallenDemon:
I think I have it wired correctly to the arduino.

Photo please.