Spike is a handheld gaming console based on ATMega Microcontrollers.
I've been playing around with this idea for a long while and the Spike is the current 'state-of-the-art' for me.
The main spike board has:
- 128x64px monochrome OLED display
- Piezo speaker
- 7 buttons (plus reset)
- 3.7v Lipo battery
- Micro-USB port for charging & data
The shard board provides the brains and connects via an edge connector on the back of the main board.
Currently I'm using an ATMega1284p running at 16MHz.
I've written a little more detail on my blog.