So here it is! And here it is http://www.thingiverse.com/thing:360108 v0.4 all the tweaks previously mentioned rolled into an improved version. This is where the mechanical tinkering will largely park for now. Although I was looking at the gripper teeth and mechanism closely earlier... lets put that to the back of our minds eh!?

Next up is the electronics part. A lot of thought has gone into this already and currently it's an amalgam of multifunctional parts inside my head. Need to strip down and focus on what a single arm needs. I've already worked out how to control a couple of hundred at the same time but most people aren't going to want that! A mega328 board offers the most off the bat, would be easy to replicate from off the shelf components too keeping things reasonably accessible and open. Will be throwing together in KiCad too so it will be Open all the way down.