Thanks to Kevin Williams for putting these instructions together!
This is a stand for my Hoberman Sphere model that allows you to spin the sphere either manually or with a motor. It should be pretty straight forward to swap in Power Functions components for the the original 9V components (which is what I used when I originally built the model back in 2006).
The stand is designed to open and close the sphere by alternately spinning it at speed and slowing it down. Obviously some sort of controller needs to be added to do that automatically.