just saw this searching for how to automate my home depot skeleton.  Great job.   I'm curious on the shoulder joint.  Is that a custom piece that the connector rod us attached to?  Also how is it that moving that piece moves the shoulder?  Are some of the parts glue together? Starting from inside the body, I see a nut, a locking washer, connector rod assembly with a spring for added tension, two more nuts, and finally the bearing.  Trying to figure out out these are connected and move the actual arm?

Thank you  I hope to get back to Boney the Skeleton Dog. Check him out.

Great

Kurt Thanks for following my projects I posted a pic of Skelly's ride check it out

It's awesome seeing this project come together, soon he'll be walking around scaring the dog or cat in the house.

I really appreciate the solid mechanical design you are doing there — all servos using push rods and separate bearings and everything. I've been guilty of abusing servos as hinges myself so many times, it's nice to see it done properly.