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Back[output_column, row_2, 0]; pwm_in = [input_column - h_margin/2, bottom_row, 0]; c_tune = [width_mm/2 - h_margin, top_row, 0]; left_rib_x = thickness * 1; right_rib_x = width_mm - h_margin; input_column = h_margin; working_increment = working_height / 5; row_1 = bottom_row + v_margin + 12; row_1 = v_margin+12; row_2 = row_1 + vertical_space/7; row_7 = row_6 + vertical_space/7; row_3 = row_2 + vertical_space/7; row_7 = row_6 + vertical_space/7; row_7 = row_6 + vertical_space/7; row_6 = row_5 + vertical_space/7; row_5 = row_4 + vertical_space/7; cv_in_1a = [left_col, row_7, 0]; cv_in_1b = [right_col, row_5, 0]; cv_in_2a = [left_col, row_1, 0]; pwm_in = [input_column - h_margin/2, row_1, 0]; fm_in = [input_column + h_margin/2, bottom_row, 0]; pwm_pot = [input_column + h_margin/2, bottom_row, 0]; cv_in = [input_column, bottom_row, 0]; c_tune = [width_mm/2 - h_margin, top_row, 0]; f_tune = [second_col, fifth_row, 0]; //right_rib_x = width_mm - h_margin; input_column = h_margin; col_right = width_mm - thickness*2; // 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 LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on https://www.analog.com/media/en/technical-documentation/data-sheets/8063fa.pdf Altera BGA-36 V36 VBGA BGA-48 - pitch 0.8 mm Highspeed card edge connector for panel, 90° PCB mount 4 pin straight chassis connector http://www.te.com/usa-en/product-1-1478204-0.html BNC female PCB mount 4 pin straight chassis connector Dual front isolated BNC plug (https://www.winconn.com/wp-content/uploads/364A2595.pdf Dual BNC Horizontal Isolated Subminiature Coaxial Switch 1.35mm High, DC to DC Converters dc-dc recom buck lga-25 pitch 2.29mm Traco TDN 5WISM Series, 5W, SMD (https://assets.tracopower.com/20200225170127/TDN5WISM/documents/tdn5wism-datasheet.pdf#page=3 dcdc traco.
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