@chris-annin There is also an error in the J2 Drive Spindle PDF Drawings for both the AR3 and AR4. I haven't yet checked the AR4-MK3. My J2 Motor+Pla...

@chris-annin Thank you Chris. From what I can see for the AR4-MK3 the only difference is that recess. The Hub recess is in the same place relative to...

The 3mm x 1mm silicon tubing arrived. I'm glad I ordered the right angle connectors in addition to the quick attach ones. The silicon tubing is too so...

Life has gotten in the way over the last few months. Now have a new 3D printer and finally, after an order vanished and was reshipped have my connecto...

Still need to order 3 encoders. Some of the screws have arrived. The rest are on their way. Started machining some of the parts. Will have to redo the...

Making some progress inbetween work-work projects. Still haven't gotten around to making the metal parts but since I'm starting out building an AR3 fi...

Some more progress on the Teensy 3.5. I have CUI encoders run from 5V. The quadrature encoder puts out the 5V waveform which will ultimately overwhelm...

@chris-annin I will definitely do that. And, even more important. My compliments to you and your project. Truly an impressive piece of work. I'...

It's the entire assembly without the covers or belts. But the pulleys are linked so turn one on the motor and the corresponding arm moves. So cool!