[apologies, I was sure I posted this but cannot find any evidence of this post on the website. Please ignore if it is a dup]
I have a Wild Thumper on a standard Dagu chassis using the sample firmware. Flysky 3-channel RC transmitter, hooked up to D0, D1.
7.2V nicad charged up and attached. Demonstrated that the motors are driven using the diagnostic Arduino Wild Thumper code.
With the RC, I can get the motors to move in the right direction (power, steering) for maybe a 1/2 second then it stops dead.
This suggests something about the current sensing.