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What is the best way to create a Code-a-Pillar copy? Answered

Greetings! I'm trying to understand how to make my own Coda-a-Pillar copy


The functionality can be reduced to basically the "head" being able to tell, what is the sequence of rings that are connected to it.

How do I do it with an Arduino or Raspberry pie? What has to be inside each ring?


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