This is the most powerful robot I have encountered. I lost the lower ultrasonic so it kept getting 0 readings making it think something was right on top of it so of course it spins in circles trying to avoid the 0 distance object, duh. I tried to grab it to shut down the controller but even at 1/10 power it cranked me. It will obviously have to learn that 1 360 deg. rotation is sufficient to decide a stop. Due to the kinematics it seems like enough power to move the machine is enough to render it too much for muscular override due to the weight of the thing.