I found out from reading Wired, that apparently there’s a name for the family of robots that resemble hamsters on a treadmill: “miniball” robots. The name comes from a now-retired do-it-yourself kit to build such a robot, formerly manufactured by Solarbotics. I was bummed when I discovered that I can’t just buy the kit with all the parts intact (I am lazy AND impatient). It turns out that I cannot find much information on this family of robotic devices anymore, however, the miniball was originaly invented by Richard Weait of North York, Toronto and used battery power. This design produces a very amazing robot with simple circuitry that proves to be a very capable robot that rarely got stuck.
However, SWARM, the large-scale kinetic art project uses electrically powered spheres, radio-controlled units that receive their commands from a mother node. This video is of the SWARM units at Maker Faire 2008:
The folks at Instructables note the original Miniball had a geared motor that moved as a counter weight around a fixed shaft inside the plastic ball container. As the motor tries to move the weight forward, the ball starts to roll in that particular direction.
Jérôme Demers, an intern with Solarbotics has resurrected the irresistibly cute design and given it a solar facelift:
“In our case we have a motor with wheel, which spins the ball forward as it runs. Imagine this like a hamster in a ball – it’s almost the exact same thing! But in this case, we’re feeding our hamster with photons!”
Watch the video (with great audio track background) here:








