Single board computers: http://en.wikipedia.org/wiki/List_of_single-board_computers
arduinos: http://arduino.cc/en/Main/Products
old arduinos: http://arduino.cc/en/Main/Boards
Nice arduino projects: http://bildr.org/page/3/?s=arduino
My arduino projects
- arduino-low-voltage-disconnect-circuit
- WiFi Energy Monitor
- Mini Solar Panel and Battery Charger Test