Slot Wheels Part Deux
Success. With a bit of code tweaking, I was able to drive all 3 wheels smoothly with a tiny power supply. It was a matter of making sure I never have more than one powered at a time. Slowing down the motors a hair helped as well. Also, not interrupting the drive to send status messages over the serial port has a way to smoothing the motion. I also figured out how to make the wheels slow down at the end to give the illusion of a mechanical wheel (with far more inertia than these have).
So, moved on to making sure the sensors were working for all 3 wheels. Here the challenge was more of wire management. 3 sensors times 4 wires per = 12 more wires to manage (in addition to the 12 wires needed to drive the 3 motors). Got that sorted and it mostly worked.
Up next, adding switches, lights, and sound.