Based on the movements in the show, I strongly suspect it was built off something like a Roomba, and that it is basically a two-wheel system with the casters in the corner just for balance. There's no reason for the prop to have corner wheel drives and two-wheels is more than adaquate and simple.
(06-13-2016, 12:26 PM)Markus Wrote:(05-20-2016, 07:24 PM)kresty Wrote: You give any thought to it's movement? I mean IIRC it kinds "orbits" and moves slowly, so maybe some sort of holonomic drive system? (That'd do spinning pretty easily)
Nothing jumped out at me and said "this 1/8 scale car frame would work great for this".
That said, it looks like it shouldn't be too hard...
A holonomic drive system (I had to look that up ...) would probably be the proper solution for this droid. In particular if you place one omni-wheel in each corner, that's how the original seems to work. But this would probably also make it quite expensive. I think I will go for a 2 wheel drive plus a caster wheel for mine.