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MarkingWidth = 1.5*1; DistanceBetweenKnurls = 3*1; TimerKnobConst = 1.8*1; PI=3.14159265*1; KnobMajorRadius = KnobDiameter/2; KnobMinorRadius = KnobDiameter/2 * (1 - TaperPercentage/100); KnobRadius = KnobMinorRadius + (KnobMajorRadius-KnobMinorRadius)/2; Divot=CapType; TaperAngle=asin(KnobHeight / (sqrt(pow(KnobHeight, 2) + pow(KnobMajorRadius-KnobMinorRadius,2)))) - 90; if (NotchedShaft==1) { cube([HoleDiameter/2, ShaftDiameter*2, ShaftLength], center=true); } // label the whole must be non-zero. RingMarkings = 10; label_font = 6; //knob_radius saw_out = [output_column, row_2, 0]; fm_lvl = [h_margin+working_width/8, row_4, 0]; pwm_cv_lvl = [width_mm - h_margin - working_width/8, row_3, 0]; pwm_duty = [width_mm - h_margin - working_width/8, row_2, 0]; pwm_in = [input_column + h_margin/2, row_1, 0]; audio_out_2 = [right_col, row_5, 0]; audio_out_1 = [right_col, row_1, 0]; square_out = [third_col, third_row, 0]; saw_out = [output_column, row_1, 0]; saw_out = [h_margin + working_width/4, row_1, 0]; fm_pot = [input_column + h_margin/2, row_1, 0]; triangle_out = [output_column, bottom_row, 0]; pwm_duty = [second_col, fourth_row, 0]; pwm_cv_lvl = [width_mm - h_margin - working_width/8, row_3, 0]; pwm_duty = [width_mm - h_margin - working_width/8, row_3, 0]; left_rib_x = thickness * 1; h_wall(h=4, l=right_rib_x); // 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 arduino nano (other options probably fine), two 74HC595 shift registers (accidentally a pile in my collection) and the output jacks bottom_row = v_margin + 12; row_2 = row_1.

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