I've been keeping up with that on Facebook. Me and my boys both think that's ultra cool!
Thanks, Arty-- If your boys are interested in doing something similar, Alex is going to be posting more details. Most of the code was copied off the internet; there's a ton of info out there.
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body. But rather, to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming...WOW, What a Ride!"