This video shows one of my experiments to send a wireless signal from one Xbee module to another. The idea was to make a box that contained an arduino board, a tilt switch and an Xbee module. It would be powered by a 9V battery. If you shook this box it would trigger the tilt switch and this would send a radio signal to the other Xbee module which would be attached to the PC via USB. This data would then run into the computer and affect the graphics in a processing sketch, making the graphics shake around like snow.