Robot Army

It is sort of hard for canal to give me something out of spec since they don't really have specs to begin with. In any case, when they say 0.25" acrylic, they mean "somewhere in the 0.20-0.25 range". I usually just measure the last thing I had made with the micrometers, assume it's the same, and cross my fingers. Maybe if I stuck to one color it would help. In any case it fit after a wee bit of dremeling. This robot is my second "super traditional" robot, i.e. round with differential drive and two casters, the first being devilcat. Therefore, this one being somewhat smaller, it is is going to be called either DevilCatII, DevilCatMini, or DevilKitten, or something equally dorky. Undecided on that. Like TB2 it's mostly cnc lasercut acrylic (about 3x more than TB2) and so far it seems pretty sturdy. The drive shafts -- which have to fit the wheel bolt pattern, the bearing I.D. and the motor shaft shape -- will have to be very carefully machined, though, which officially makes this "hard". It has two 6cm omniwheel casters, which are theoretically better than swivel casters because they are stateless, but I'm a little skeptical. Of course, mounted on such short radius swingarms as they are, swivel casters were basically a non-starter. It's powered by a pair of rc-car battery packs, that is, 2x3 flat C packs, particularly 4.2AH NiMH ones, for ~60Wh total.