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This LEGO Great Ball Contraption sorts balls on color but not by a computer. This means humans have to do it. To achieve this a Powerfunctions servo motor and remote control is used. Every color has its own path down including non-orange and non-white. This machine is 100% made of LEGO parts including steel counterweights.

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Edited by Berthil

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very nice!

I love how the carriers wiggle with every indexed rotation,  also highly satisfying to see them go down in a traain once a rail is full.:sweet:
well done! 

how is the reliability?

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Thanks all!

@shadow_elenter Ball entry is very reliable. The hoses for the way down are very tight together and sensitive, I will try to optimize them further before taking it a full week to LEGO World Utrecht.

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