But lately I have been hacking on Arduino projects. Primarily I have revived my 10x8 7-Segment LED matrix display. When I built this thing way back in 2004, I drove it with a PC parallel port. Now I have created a Arduino based controller and coded a Conway's Game of Life simulation.
Each 7-segment display has a 74HC595 shift register on the back, soldered directly to the display using 1/8w 300R as jumpers. Its all one long shift register, whole thing is driven by only three I/O pins. Its nice, simple because there is no scanning, but is SUCKS juice. Very low CPU requirements.
See Photos below, and link to video.
Link to all photos: http://picasaweb.google.com/matthoskins/GameOfLifeArduino7SegmentLEDMatrix?feat=directlink
Link to video: http://www.youtube.com/watch?v=TCSMSq5wLNs