YARB is a robotic blimp controlled using an Android phone. Images are sent over Wi-Fi from the blimp to the phone’s display as it’s maneuvered along using the tilt sensor inside the G1.
The tilt sensors in the Android phone work quite nicely for rotor control – we have proportional steering so the amount of tilt controls the amount of power, and live video is displayed on the Android screen from the blimp’s onboard Surveyor SRV-1 Blackfin camera, carried via the same radio channel that sends the control signals.