We've (VancouverIslandRobotics.org) been asked to take part in a local hobby fair, and everyone would like to offer a really simple kit for the folks who attend the fair to optionally build.
I really like the idea of David Cook's sandwich bots but after digging into it a bit deeper still seems like it'll cost around $40-$50 CDN which is a bit higher than we were hoping for. The biggest isue of course is decent motors at a decent price, so keeping the costs down for the other parts is paramount.
So, I'd like some links (yes I've been Googling for a couple of days) for strictly analog based bots, a line follower (like David's) and/or a maze solver (I have a single switch based one from tamiya:that I can copy, but was hoping for something slightly more complicated).
Any help is greatly appreciated. Steve