We had the chance to cover the Hexapod MK-III robot a while ago. If you have one of these robots, you may want to add Bluetooth support to it. The InterbotiX Bluetooth upgrade kit has you covered. You will be able to control your robot using the BT Commander app on your Android device. You get a Bluetooth module, cable, mounting plate, and everything you need to get started.
Like what you see? You can get one of these kits for $24.95.