This is a spherical robot design that I am working on. I intend to use this to create a replica of BB-8 (lots more work to do!). It is about 18" in diameter and very intuitive to control. I have spent about $400 for everything in this instructable. The internal structure and drive system is made from primarily Actobotics parts available through Servo City.
I am a maker. As founder of MakerBlog, I enjoy sharing ingenious creations with others! I also enjoy the random and unique!