A student found this Zapper and an NES console at the thrift store during one of my electronics hacking classes. He only wanted the console (converted it into a Raspberry Pi based game emulator) and gifted me the Zapper. I used an Arduino Pro Micro and accelerometer sensor to convert it into a mouse controlled by swinging the zapper around. Because it moves the mouse based on acceleration, it doesn't need to be pointed at the computer screen. Left click for the mouse is the Zapper trigger and I put an extra button on the bottom of the grip for right click.