Over the last couple of years, in my spare time, I've been developing a simple low-cost robot called Lobot. After I got involved in combat robotics I noted that the cost of the hardware, the transmitter in particular, was a barrier for some people. I realised that Lobot actually already had all the necessary functionality to control an Antweight robot, but it is designed as a standalone device with the drive motors, battery etc... mounted directly to the PCB and size optimized for hand-assembly. I stripped out all the unnecessary functionality and shrank the board as much as possible (without increasing the cost of the PCB too much and still allowing for hand-assembly). To keep the cost and size down I've kept the design relatively simple and haven't included much in the way of protection (same as most hobby-grade electronics).

The board allows control of the robot drive motors and one ESC/Servo channel over Bluetooth. A simple Android app to control Lobot Mini is included on the GitHub page.