Lego GBC Rotating Cup Module

This lego great ball contraption (GBC) module features a mechanism using friction to lift the balls. I built this module because I wanted it to be easier for people to get into building GBC modules, as it can be quite hard to build your first one by yourself. It is a slow but reliable module, and it can hold the GBC standard of 30 balls at one time. You can watch it running here:

https://youtu.be/szmbxqZNeU8