I have been considering making a tween bot. (http://www.tweenbots.com) It needs to be a cute robot thats not too large to man handle yet it a bit too big to carry comfortably. I am not good at the arty side so looking for ideas.
It will also need a slow moving, none steerable drive mechanism. I have fiddled with adjustable DC-DC converters so that I get a low voltage to a DC motor. It does not work that well. I was wondering if I should consider stepper motors. I think this will give high torque and low speed. Is there a trick to driving a stepper motor at a fixed rate. Given the low tech aim I was hoping to avoid programmable parts. Another solution could be servos with the end stops removed but this would probably need a pic to drive them.
If it ever gets built I was considering letting it go in Pittville Park. Perhaps with a destination of the pump room and the cross cafe. The destination is on the flag and it auto steers to the destination using kindness.