In the past few years, we have covered plenty of great ball contraptions here. Berthil van Beek’s Staggered Lift LEGO GBC is also worth a look. It is powered by a LEGO XL motor and has 14 steps. The machine puts on a mesmerizing show as it moves tiny balls. The below video shows it in action:
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Staggered Lift LEGO GBC
You can find the instructions for this LEGO machine here.
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