Here's my 7th axis design. Had the 1.5" square aluminum extrusions laying around. Figured I'd put them to use. Bought the 500mm linear rails and ball ...

The basic AR4 Robot is now up and running. I had only a few mistakes to correct. One limit switch was stuck in the closed position, J2 and J3 encoder ...

Make sure you get the latest STL files if you are building the latest AR4 robot. I didn't and had issues assembling J2. Once I downloaded the updated ...

Since I didn't buy a enclosure with a clear lid I decided to add a window. Can show off the electronics and aid in troubleshooting as needed.