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Simple one, using Arduino (nano or uno) + MCP4725 (DAC). ** https://hkadesign.org.uk/monotronkb.html for yet another version Alternative: CV from something else use a non-metal spacer underneath alpha pots: barely enough to attach knob Schematics/SynthMages.pretty/Alpha Rotary 12.kicad_mod 46 lines From 5082711a9800483ca58d4b1dffec55bdf27856b9 Mon Sep 17 00:00:00 2001 Subject: [PATCH] Update current state of project. Add cascading input and output jacks working_height = height - v_margin; working_increment = working_height / 5; out_row_1 = v_margin+12; row_2 = row_1 + v_margin + 12; row_1 = v_margin+12; // draw a "vertical" wall to mount a circuit board to, dead center // pcb_holder(h=10, l=top_row-rail_clearance*2-15-thickness, th=1.15, wall_thickness=1); // Create a hole for mounting screw: ISO 1481-ST 2.2x4.5 C (http://www.fasteners.eu/standards/ISO/7049/) || order number: 1924130 16A (HC Generic Phoenix Contact connector footprint for: MC_1,5/12-G-3.81; number of pins: 07; pin pitch: 5.08mm; Angled; threaded flange; footprint includes mount hole for mounting screw: ISO 1481-ST 2.2x6.5 C or ISO 7049-ST 2.2x4.5 C or ISO 7049-ST 2.2x6.5 C or ISO 7049-ST 2.2x4.5 C (http://www.fasteners.eu/standards/ISO/7049/) || order number: 1829183 12A 630V Generic Phoenix Contact connector footprint for: MCV_1,5/12-GF-3.81; number of pins: 02; pin pitch: 3.81mm; Angled || order number: 1924156 16A (HC Generic Phoenix Contact SPT 2.5/9-H-5.0 1991040 Connector Phoenix Contact connector footprint for: MC_1,5/5-G-3.81; number of pins: 04; pin pitch: 5.00mm; Angled || order number: 1766369 12A 630V Generic Phoenix Contact connector footprint for: MSTBA_2,5/2-G-5,08; number of pins: 04; pin pitch: 7.62mm; Angled; 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: 1843871 8A 160V Generic Phoenix Contact connector footprint for: MCV_1,5/5-G-5.08; number of pins: 03; pin pitch: 5.08mm; Angled || order number: 1923979 16A (HC Generic Phoenix Contact connector footprint for: MCV_1,5/13-G-3.5; number of pins: 03; pin pitch: 5.00mm; Vertical; threaded flange || order.

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