[miketwalker]

Wow, that's really cool... from what I see, if you purchased the circuit boards and sensors and all, you could probably build all of that for relatively cheap if you used old robotics parts, and it seems like a really good project to work on just to learn things... I subscribed to the mailing list... I'd recommend for others to check that site out and look around, everything is open-source which is really cool so you can see exactly how they designed and built it.