Simply the best gosh-darn hobbyist robot controller out there!
Finally, a Android-based hobbyist robot controller that works with every microprocessor. There is no corresponding software required on the robot, you can write your own code to your heart's content.
A clean, simple app that features:
All that is needed is a cheap bluetooth unit (a BlueSmirf unit from SparkFun was used for testing) and any flavor of microcontroller. Arduino, Picaxe, Propeller, BS2, AVR --anything that can receive serial data can use this app. If you can send text to a LCD or a terminal, you can use this app. Baud rate from 9600 to 115,200 are supported and auto-detected.