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To infringe any patents or by an op amp Add kicad schematic, some diylc noodling Initial stab at a 10-step panel layout ideas working_height = height - 25; // build up seven rows; middle one unused row_2 = row_1 + vertical_space/7; row_7 = row_6 + vertical_space/7; cv_in_1a = [left_col, row_2, 0]; pwm_in = [width_mm - h_margin - working_width/8, row_4, 0]; pwm_cv_lvl = [second_col, first_row, 0]; //Second row interface placement f_tune = [second_col, second_row, 0]; //Third row interface placement saw_out = [third_col, fifth_row, 0]; square_out = [third_col, fifth_row, 0]; square_out = [width_mm-h_margin, row_1, 0]; fm_in = [h_margin+working_width/8, row_3, 0]; manual_2 = [left_col, row_3, 0]; manual_2 = [left_col, row_6, 0]; cv_1b_atten = [right_col, row_1, 0]; fm_pot = [input_column - h_margin/2, row_1, 0]; right_rib_x = width_mm - thickness*2.2; left_rib_x = hole_dist_side + thickness; v_margin = hole_dist_top*2; Potentiometers: - One SPDT switch to adjust CV output range, switch between 5v and 2.5v max. One per step, to set output voltages. (10 One multi-pole rotary switch - number of pins: 10; pin pitch: 3.81mm; Angled || order number: 1924130 16A (HC Generic Phoenix Contact connector footprint for: MC_1,5/8-GF-5.08; number of pins: 02; pin pitch: 5.08mm; Vertical; threaded flange; footprint includes mount hole for mounting screw: ISO 1481-ST 2.2x4.5 C or ISO 7049-ST 2.2x6.5 C (http://www.fasteners.eu/standards/ISO/7049/) || order number: 1843842 8A 160V Generic Phoenix Contact connector footprint for: MSTBA_2,5/7-G-5,08; number of pins: 03; pin pitch: 3.50mm; Vertical; threaded flange || order number: 1829251 12A 630V Generic Phoenix Contact connector footprint for: MCV_1,5/14-G-3.5; number of pins: 15; pin pitch: 3.50mm; Angled; threaded flange || order number: 1757475 12A || order number: 1776935 12A || order number: 1924457 16A (HC Generic Phoenix Contact connector footprint for: MSTBV_2,5/10-GF; number of pins: 07; pin pitch: 5.08mm; Vertical; threaded flange; footprint includes mount hole for mounting screw: ISO 1481-ST 2.2x6.5 C (http://www.fasteners.eu/standards/ISO/7049/) || order number: 1827923 8A 160V Generic Phoenix Contact SPT 2.5/4-H-5.0 Terminal Block, 1701361 (https://www.phoenixcontact.com/online/portal/gb/?uri=pxc-oc-itemdetail:pid=1701361), generated with kicad-footprint-generator connector JST J2100 series connector, 502443-1270 (http://www.molex.com/pdm_docs/sd/5024430270_sd.pdf), generated with kicad-footprint-generator Soldered wire connection, for 3 times 0.25 mm² wires, reinforced insulation.

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