This is my attempt at building an inexpensive robot.
I'm not currently a Merit Badge Counselor, but I'm considering applying to be one. I've been trying to figure out ways of making it easier for scouts to learn about robotics as others are discussing in this thread.
I'm hoping this robot can be an example of how relatively easy is can be to build a custom robot.
My main concern with is Robot is the Lego wheels. While these wheels were easy to attach to the servos, I can't expect scouts to have access to wheels like these. I'll likely modify this robot to use jar lids (as used in PJ's "Cypherbot") or some other form of inexpensive wheels.
See post #2 for the latest software to use with this robot.
Post #3 has some pictures showing the construction process and a bill of materials.