One sharp young man started quizzing me about how the controller worked, and I told him it was "magic". "I know about circuits so I know it is not magic," he told me. I showed him the micro-contollers and how the sensors were wired. I even show him the actual code on my laptop. Not only could he read and under stand it, but he wanted to make some edits!
Here is a video showing where we were at. There were three full rooms of this! I'll post another entry about some of the other details.
Here is another post about the show.