We all seen the bb8 from Start wars. We all know there is a sphero inside. But what remains a secret is the head, how is it suspended? Further it can rotate left and right as well as move around the ball down the sides a bit. The movement is smoooooth.
I am starting a discussion for anyone who wants to join. The head does not touch the ball at all, it is perfectly suspended. I have a lot to learn maybe this is a way to start?
One theory is something akin to this:
THeres another concept on youtube I cant find right now, but it is magnets evenly spaced on a disc with the poles alternating and it can hover over copper, the same way those stupid new hoverboards work. But without dry ice.