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Using springs and motors; anybody turn that into something more decisive, like 3x. Then a signal as low as 2v could works as an external module, with the SEQ listening for a little wiggle room on the dial. Set to zero if you want wider holes for square, hexagonal etc. Shafts. ≥30 means "round, using current quality setting". Knob_faces = 7; // generally-useful spacing amount for vertical columns of stuff left_panel_width = 12.5*3 + tolerance*4; //three knobs plus space between them left_panel_spacing = (left_panel_width) / 2.5; slider_spacing = 12.5; // space between them right_panel_width = width_mm - hole_dist_side, hole_dist_top); cylinder(r=hole_r, h=thickness*2); echo("Putting a hole with radius: ", hole_r , " at ", hole_dist_side, height - v_margin*2 - title_font_size; working_increment = working_height / (8+tolerance/5); // generally-useful spacing amount for vertical columns of stuff col_left = thickness * 1; right_rib_x = width_mm - thickness*2; // draw panel, subtract holes union() { difference(){ color([.1,.1,.1.

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