This device is basically a “joystick for the PC that uses accelerometers to to detect user input” — similar to the PS3’s Six-Axis controller. More information here. Video after the jump.
It looks really cool, kinda like the Nintendo Wii controller and the PS3 controller. He used a CUBLOC 405 module, accelerometer, and an unknown USB controller. Garrett says he will have a howto very soon, so keep checking over the next couple days for the 6 axis controller. It’s not wireless yet but that should be the easy part