BB-8 has been a craze in the last year since we’ve seen the new trailer for Star Wars: Episode VII and everyone wanted to know how this little robotic critter functions.
Well, now we can. In the video from above you can see that it has two wheels and a big counterweight to keep the wheels in contact with the inner surface of the plastic sphere. Then a neck stems from the base and has a magnet on top of it.
That magnet is the one which keep BB-8s head on the body ball. Neat, cool and interesting. Now you know it too.
The Force awakens.