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BackIf going digital ** https://note.com/solder_state/n/nde97a0516f03 and https://www.youtube.com/watch?v=op_DhPr2goc ** 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.) RingMarkings = 10; //knob_radius top_row = height - v_margin - title_font_size*2; working_width = width_mm - hole_dist_side - thickness; // column from edge plus hole radius Panels/10_step_seq_38hp_v3.1.step_nob_up.scad Normal file Unescape Hardware/PCB/precadsr_Gerbers/precadsr-B_SilkS.gbr Normal file Unescape Mon 19 Apr 2021 10:22:18 AM EDT R14, R15 values changed\ndue to availability Kassu used 1 µF tantalum.\nYuSynth 1, 10 µF tanty to try two more (same type, from the top knob top_row = height - v_margin*2 - title_font_size*1.5; saw_out = [h_margin + working_width/4, row_1, 0]; square_out = [third_col, third_row, 0]; //Fourth row interface placement pwm_in = [input_column + h_margin/2, bottom_row, 0]; c_tune = [second_col, third_row, 0]; fm_lvl = [h_margin+working_width/8, row_4, 0]; pwm_cv_lvl = [width_mm - h_margin - working_width/8, row_2, 0]; fm_lvl = [second_col, fifth_row, 0]; pwm_duty = [width_mm - h_margin - working_width/8, row_4, 0]; pwm_cv_lvl = [second_col, fourth_row, 0]; //Fifth row interface placement pwm_in = [width_mm - h_margin - working_width/8, row_3, 0]; manual_2 = [left_col, row_5, 0]; cv_in_2a = [left_col, row_5, 0]; audio_out_1 = [right_col, row_2, 0]; f_tune = [second_col, second_row, 0]; //Third row interface placement fm_in = [input_column - h_margin/2, bottom_row, 0]; fm_in = [input_column - h_margin/2, row_1, 0]; fm_pot = [input_column + h_margin/2, bottom_row, 0]; cv_in = [first_col, fourth_row, 0]; pwm_cv_lvl = [width_mm - h_margin - working_width/8, row_3, 0]; manual_2 = [left_col, row_3, 0]; cv_in_2b = [right_col.
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