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Contributions with other material, in a ring arrangement; a challenging PCB and/or print job! See PDF at https://raw.githubusercontent.com/kassu/kassutronics/master/documentation/Quantizer/Quantizer_Build_Docs_1.1A.pdf for explanation about PWM smoothing; essentially a 4-stage RC network but with buffering between (some) stages. Needs a _big_ knob, these are for steps only row_1 = v_margin+12; // draw a "vertical" wall 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 clone (atmega 328p), 12-bit dac (mcp4726) and small amounts of supporting hardware Microcontroller and smoothed PWM https://kassu2000.blogspot.com/2019/10/quantizer.html using a setscrew). (ShaftLength must be non-zero.) ShaftDiameter = 10; // [1:1:84] width = 10; label_font = 6; //knob_radius saw_out = [output_column, row_1, 0]; fm_in = [input_column + h_margin/2, row_1, 0]; pwm_in = [input_column - h_margin/2, row_1, 0]; audio_out_2 = [right_col, row_5, 0]; cv_in_2a = [left_col, row_3, 0]; pwm_duty = [input_column, row_2, 0]; audio_in_2 = [left_col, row_3, 0]; pwm_duty = [second_col, fourth_row, 0]; pwm_cv_lvl = [second_col, fifth_row, 0]; pwm_duty = [width_mm - h_margin - working_width/8, row_3, 0]; cv_in_2b = [right_col, row_2, 0]; pwm_in = [first_col, fourth_row, 0]; //Fifth row interface placement triangle_out = [third_col, third_row, 0]; //Fourth row interface placement sync_in = [first_col, third_row, 0]; //Fourth row interface placement fm_in = [first_col, fourth_row, 0]; pwm_cv_lvl = [width_mm - h_margin - working_width/8, row_2, 0]; pwm_in = [width_mm - h_margin - working_width/8, row_2, 0]; pwm_in = [first_col, fourth_row, 0]; pwm_cv_lvl = [width_mm - h_margin - working_width/8, row_3, 0]; manual_2 = [left_col, row_6, 0]; audio_in_1 = [left_col, row_6, 0]; cv_1b_atten = [right_col, row_5, 0]; cv_in_2a = [left_col, row_1, 0]; fm_pot = [input_column + h_margin/2, bottom_row, 0]; pwm_pot = [input_column + h_margin/2, bottom_row, 0]; pwm_pot = [input_column - h_margin/2, row_1, 0]; fm_pot = [input_column + h_margin/2, row_1, 0]; pwm_in = [width_mm - h_margin - working_width/8, row_4, 0]; left_rib_x = 0; /* [Cone Indents (optional)] */ // Four hole threshold (HP four_hole_threshold = 10; threeUHeight = 133.35; // overall 3u height panelInnerHeight = 110; // rail clearance issues, make all power traces large main VCA/Schematics/Dual_VCA_with_cv2.diy 8684 lines master PSU/Synth Mages.

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