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= working_height / (8+tolerance/3); // generally-useful spacing amount for vertical columns of stuff working_increment = working_height / 7; // generally-useful spacing amount for vertical columns of stuff working_increment = working_height / (8+tolerance/3); // generally-useful spacing amount for vertical columns of stuff col_left = thickness * 1; right_rib_x = width_mm - h_margin; working_height = height - v_margin - title_font_size*1.5; top_row = height - v_margin - title_font_size*2; working_width = width_mm - hole_dist_side - thickness; // draw a "vertical" wall to mount a circuit board to, dead center // one more vertical to mount a circuit outside the full dev board (in some cases) Arduino + DAC https://www.youtube.com/watch?v=t3kUPjdiq0o for explainer https://drive.google.com/drive/folders/156nn9rClRLJplS4M46s56-Pibi86Z-Kp for schematics and .ino file uses an LM13700 OTA (operational.

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