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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 disclaimer in the bottom (in mm). HoleDiameter = 6; //knob_radius saw_out = [third_col, fifth_row, 0]; square_out = [output_column, row_2, 0]; f_tune = [width_mm/2 + h_margin, top_row, 0]; f_tune = [width_mm/2 - h_margin, top_row, 0]; f_tune = [second_col, first_row, 0]; sync_in = [first_col, first_row, 0]; sync_in = [first_col, fourth_row, 0]; triangle_out.

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