Greetings. Nifty project. Lots of work, nicely done. That said, the body upper and body lower stl files stored in the Thing Files Folder do not match those in your assembled photos, and the multiple part print photos. The body stl files do not have the screw bosses centered on the front and rear of the assembly. Plus, the body parts in the multiple part print pictures look like they might be a bit wider than than those in the Thing Files Folder. Are there more recent stl files for the body (using the SG-90 servo's) available?
Thanks. Really looking forward to looking at your Arduino Software (retired software engineer). Again, nice job.