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(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 sufficiently detailed for a in depth descrition of the indenting cones. Cone_indents_count = 7; // generally-useful spacing amount for vertical columns of stuff col_left = thickness * 1; right_rib_x = width_mm - h_margin; cv_in = [first_col, fourth_row, 0]; pwm_cv_lvl = [second_col, third_row, 0]; fm_lvl = [h_margin+working_width/8, row_2, 0]; pwm_in = [width_mm - h_margin - working_width/8, row_2, 0]; triangle_out = [width_mm-h_margin-working_width/4, row_1, 0]; fm_pot = [input_column + h_margin/2, row_1, 0]; audio_out_2 = [right_col, row_5, 0]; cv_in_2a = [left_col, row_5, 0]; cv_in_2a = [left_col, row_7, 0]; cv_in_1b = [right_col, row_5, 0]; cv_in_2a = [left_col, row_6, 0]; audio_in_1 = [left_col, row_7, 0]; manual_1 = [left_col, row_5, 0]; cv_in_2a = [left_col, row_2, 0]; cv_2b_atten = [right_col, row_2, 0]; fm_lvl = [h_margin+working_width/8, row_3, 0]; c_tune = [width_mm/2, top_row, 0]; f_tune = [second_col, third_row, 0]; fm_lvl = [second_col, second_row, 0]; //Third row interface placement saw_out = [output_column, row_2, 0]; fm_in = [h_margin+working_width/8, row_4, 0]; pwm_cv_lvl = [width_mm - h_margin - working_width/8, row_3, 0]; manual_2 = [left_col, row_6, 0]; cv_1b_atten = [right_col, row_2, 0]; cv_2b_atten = [right_col, row_5, 0]; cv_in_2a = [left_col, row_6, 0]; audio_in_1 = [left_col, row_6, 0]; audio_in_1 = [left_col, row_1, 0]; triangle_out = [third_col, fifth_row, 0]; pwm_duty = [input_column, bottom_row, 0]; c_tune = [width_mm/2, top_row, 0]; left_rib_x = hole_dist_side + thickness; v_margin = hole_dist_top*2 + thickness; working_height = height - v_margin - title_font_size*1.5; working_height = height - v_margin; working_increment = working_height / 5; row_1 = v_margin+12; row_2 = row_1 + v_margin + 12; title_font = 10; // diameter of the indenting cones. ≥30 means "round, using current quality setting". Sphere_indents_faces = 16; knob_smoothness = 20; // [0:0%, 10:10%, 20:20%, 30:30%, 40:40%, 50:50%] // Width of module (HP) width = 38; // [1:1:84] fm_in = [input_column + h_margin/2, row_1, 0]; fm_pot = [input_column - h_margin/2, row_1, 0]; square_out = [third_col, fifth_row, 0]; pwm_duty = [width_mm - h_margin - working_width/8, row_4, 0]; pwm_cv_lvl = [width_mm - h_margin - working_width/8, row_4, 0]; pwm_cv_lvl = [width_mm - h_margin - working_width/8, row_4, 0]; pwm_cv_lvl = [width_mm - h_margin - working_width/8, row_3, 0]; c_tune = [width_mm/2 - h_margin.

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