The past few days I’ve been measuring, cutting, re-measuring and re-cutting to make sure the internal base-platform fits and is not bumping on the internal shell. To my surprise it finally fits and works perfectly. In the pictures below you can see I have an 8.5 kg centre weight that spins on a single axis. This spinning effect makes BB-8’s body turn both right and left. It works while its rolling and while he’s standing still. The weight also keeps the body from bobbing around too much. In case you’re wondering where I found a curved weight that happens to be 8.5 kg, its simple, it was originally the foot of a desk lamp ;-). The white HDPE board on top falls just below the middle point which is perfect for the head control mechanisms for which I’m planning to construct in the coming weeks. The “front” single wheel is a high torqued motor which runs at 37 rpm. I may change that out for a slightly faster one (ie 60 rpm) in the future but will run this one for the time being. Anyway, here are a few pics to give you glimpse of the progress. Ignore the wires…