So apparently the new Star Wars robot, with its crazy spinning body, is 100% real and not CGI. This is one mechanism that Fettig didn't put in his books!
http://www.ibtimes.co.uk/star-wars-force-awakens-bb8-robot-droid-real-machine-not-puppet-cgi-1496968
Star Wars: The Force Awakens – The BB8 robot droid is a real machine, not a puppet or CGI
www.ibtimes.co.uk
JJ Abrams revealed at the Star Wars Celebration fan convention that BB8 is a functioning robot.