I'm trying to use a piconzero to drive a four-wheeled robot (two micro-metal motors attached to each connector) and whilst it can happily go forwards and backwards, I can't get it to turn. The code is looking ot just turn one side of the motors forwards and the others backwards. The wheels are just stalling.
Is there some magic formula for how far apart the wheels should be on each side compared to the width of the robot? Is the piconzero board just not up to the task? Is it the motors? The tyres? The flooring (wood)? Is there something just really simple I'm missing here that there's good instructions out there for (nothing obvious seemed to show up on a forum search).