For both my automatic curtains as well as my robot arm joint I ended up using GT2 belts and pulleys. But although printing GT2 pulleys is possible, the 3d printed pulleys tend to skip some teeth quite easily when they are used in high torque applications. Just as an experiment I though to give HTD 5M belts a try.
After I finished the front panel, and getting an approval of Enzo, the next step in the process of the activity board is finishing the casing. A nice reason for some evenings in the shed.
Admittedly, building a robot arm joint transmission is way more difficult than I expected. But where’s the fun in a simple project? In my last post, I explained why a geared transmission doesn’t work. This week I’ll try a new approach.
Now that the prototype is finally complete, it is time to start assembling the 4 final motor units: a combination of wood working, 3D printing and some minor cussing. Because I expect some small adjustments along the way, I’ll make the units piece by piece.