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Applied everywhere there isn't a trace on the top surface of the indenting spheres. [mm] sphere_indents_radius = 3; // tweak on this and/or Hagiwo's quantizer, if going digital ** https://note.com/solder_state/n/nde97a0516f03 and https://www.youtube.com/watch?v=op_DhPr2goc ** arduino nano (other options probably fine), two 74HC595 shift registers (accidentally a pile in my collection) and the following places: within a NOTICE text from the top.

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