I wanted to make something with moving parts for the machine competition.
This design works okay but needs to be precise, especially the separator piece. It works (maybe even better) without the catching bin and clips.
I made a more simple, quicker to print, no moving parts design that works even better.
https://www.printables.com/model/280207-automatic-metric-nut-sorter-and-stacking-storage-c
The author hasn't provided the model origin yet.