Laser Command relies on laser pointer for control

Eliji Hayashi came up with a Laser Command game as his project for a class at Carnegie Mellon University. Why Laser Command? The answer is pretty obvious, since it uses a laser pointer as its primary gaming controller. An 8×8 LED matrix will function as the display, where it will rapidly switch between producing light and sensing it. Since the laser is bright enough, it is a snap to pick up the voltage which is generated within the matrix during the sensing periods. Programmed on an Arduino mini, the Laser Command game comes in a decently tiny form factor for that added touch of cuteness.