Motorized half automatic pano head

**Untested project for the MakerBot Giveaway contest. I’ve got no clue about how sturdy MakerBot printed parts are, this means that I don’t know if the parts I designed are thick enough to support the weight of the camera and steppers. I’m maybe plain wrong ! However, parts size have been carefully designed to fit into Makerbot’s build envelope. The only overhangs are holes, therefore the parts should be printable on a MakerBot (At least, I hope !). STL parts have been checked with Netfa