Here is a 10x10x10 stepper. It was actually a bit of a challenge to get everything to fit in the small footprint. It meets most of the GBC Standard but can only take around 20 balls, a little short of the 30 ball batch. Having said that, it can clear balls quickly.
It uses a Lego Power Functions M motor, and a simple stepper lift. Be sure to watch to the end to see the module BATTLE!
I had seen this in an earlier layout and was wondering when you'd acknowledge its existence! Do you have plans to make instructions?
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