Parallax ActivityBot in the Library Classroom

I finally feel like I have a handle on the robots I use for the “Intro to Robots” Class I have once a month. They are feisty little buggers and I had issues with several of them spinning in circles when they should have gone straight. Turns out, there were some serious issues with the placement of the encoders on the chassis, the servo connectors and the i/o pin configuration, which is just a fancy way of saying that the wires were all messed up and I had to trace the pins and the plugs to make sure left was going left and right was going right. Here is a PSA I made for the next round of classes!