I've been working on it intermittently for a couple of months, and finally today I launched the print of the last component. I did a remix of Alaris' original designs and Chris' designs modeling a new platform to house the DS3225 servo. Not having a CNC machine in the workshop, I also replaced shafts 4 and 5 with off the shelf steel dowel pins, and modeled a new shaft 1 with a 4 mm through hole in which I inserted a reinforcing steel bar. Shafts 2 and 3 have been temporarily replaced by M4 screws, waiting for an better aesthetic solution, but for the moment they are doing their job. At the moment I don't have much bandwidth available, but I plan to be able to carry out the first tests in the next few days, and once I have verified that the gripper works correctly, I plan to organize the bom, models and assembly instructions and publish here on the forum

great news!

I have recently completed the assembly of the AR3 mechanics and am completing the electrical panel these days. I also belong to the group of supporters of DIN cradles, so I designed one for the Teensy. The cradle and the din mount are mechanically coupled with (2) M2x8 screws, once inserted the board stays perfectly in place, but I have however placed a hole for an M2x3 set screw on the short side of the board at the height of the centre of the SD card slot. I have attached stl files of the two components here in case they might be useful to the rest of the community. The model is sized taking into account Z-Ultrat shrinkage, layer 0.19, infill 10%. Thanks again to Chris for sharing his fantastic work!