I have been working on a low resolution LED display controlled by a atmega164. it controls a 3x3 matrix of cells/pixels each with 3 LEDS. That means 27 LED's total per module. On average the system draws 0.25A. The completed system will be comprised of 54 of these. thats means about 14A at 5V. Any suggestions on a power supply/ distribution system? I was thinking about something like a high voltage power supply stepped down to source more current.
Here's a video of the module if you are interested.http://video.google.com/videoplay?docid=7051505557301001150&ei=WsJeSciVIoSM-QG0zbjQDg&q=pskled&emb=1