Akiyuky published a new video from his Ball Factory module, after doing some improvements to comply with the standard GBC 1.0 balls/s requirement. Now the module performs at 1.3 balls/s.
All the mechanical movements in the new module, are synchronized and driven by one single PF XL motor.
It is particularly interesting to see how the module was made synchronous, looking at it working without the balls and with the center barrel wheel out of place (2'35'' onwards).
Also notice the ball feeding mechanism was changed, and the football/basket balls do net get in separate (one of each per barrel) anymore.