The Sphere-O-bot is an open source hardware+software project. Originally from Evil Mad Scientist (very cool robots), we have adapted the idea to our electronics and ancillary elements. Software, designs and use is exactly the same.
The frame was designed by Attila Nagy (Thingiverse nick: dibloff)
The list of parts to print:
1x Spring holder
1x MAIN_frame (with support)
1x Egg support
1x Pen holder
2x Axis support
1x vertical ARM
1x Rod spacer
The Electronics are OPEN SOURCE (feel free to replicate it if you want)
You can also buy everything (customizable KIT): here
or create all the jjRobots with the MOST AWESOME ROBOTICS KIT
How to set it up?
Take a look to this link: http://jjrobots.com/sphere-o-bot-assembly-and-user-guide/