Inside the droid you've been looking for:Tear-down of the Sphero BB-8 toy
You can now build your own full-sized, remote-controlled BB-8 bot
Star Wars BB-8 Designer Sphero Raises Another $45M From Mercato, Disney And More | TechCrunch
Open Source, 3D Printed BB-8 Droid - 3D Printing Industry
How Does BB-8 Actually Work?
Review: BB-8 Hero Droid by Spin Master - Kidskintha
Sphero on the Engineering Behind their New Star Wars Products - Fictiv
Amazon.com: Sphero Mini (Blue) App-Enabled Programmable Robot Ball - STEM Educational Toy for Kids Ages 8 & Up - Drive, Game & Code with Play & Edu App, 1.57" : Toys & Games
How Does BB-8 Work?
Sphero is done making licensed Disney bots like BB-8 and R2-D2 | Engadget
Amazon.com: Original BB-8 by Sphero (No Droid Trainer) : Toys & Games
Bring Star Wars home with the BB-8 - The Hindu BusinessLine
Sphero's BB-8 is the 'Star Wars' toy everyone will want | Engadget