Build your own DIY RC Robot controller using your Android phone, Bluetooth module, and Atmega328 Microcontroller (Arduino compatible) for less than $15.  Control robots with various sizes large and small.  Step by step tutorial.

The RobotControl Android App is available here: https://play.google.com/store/apps/details?id=com.chavatech.robotcontrol

The Microcontroller for the RobotControl is here: http://www.ebay.com/itm/Microcontroller-Atmega328P-for-Robot-Control-/131082477940?pt=LH_DefaultDomain_0&hash=item1e851fe174
You can get the Microcontroller Atmega328P with RobotControl firmware loaded here: http://www.ebay.com/itm/Microcontroller-Atmega328P-for-Robot-Control-/131082477940?pt=LH_DefaultDomain_0&hash=item1e851fe174

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