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VCF Kassutronic's KS-20 https://kassu2000.blogspot.com/2019/07/ks-20-filter.html ** 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 single 0.5 mm² wires, reinforced insulation, conductor diameter 1.4mm, outer diameter 3mm, see , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block Phoenix PTSM-0,5-8-2.5-H-THR, 8 pins, pitch 5mm, size 37.3x14mm^2, drill diamater 1.2mm, pad diameter 2.6mm, see http://www.farnell.com/datasheets/2138224.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block Phoenix PT-1,5-13-3.5-H pitch 3.5mm size 36x8.3mm^2 drill 1.3mm pad 2.5mm terminal block RND 205-00068, 3 pins, pitch 10mm, size 12.3x14mm^2, drill diamater 1.3mm, pad diameter 3mm, size source Multi-Contact FLEXI-E/HK 0.127 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for 2 times 1 mm² wire, reinforced insulation, conductor diameter 2.4mm, outer diameter 3.9mm, size source Multi-Contact FLEXI-E 1.0 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Molex KK-254 Interconnect System, old/engineering part number: 26-60-5020, 2 Pins per row (http://www.molex.com/pdm_docs/sd/439151404_sd.pdf), generated with kicad-footprint-generator Diode SMD 1812 (4532 Metric), square (rectangular) end terminal, IPC_7351 nominal with elongated pad for handsoldering. (Body size from: http://www.kemet.com/Lists/ProductCatalog/Attachments/253/KEM_TC101_STD.pdf), generated with kicad-footprint-generator Molex KK-254 Interconnect System, old/engineering part number: 22-27-2121, 12 Pins per row (https://cdn.harwin.com/pdfs/M20-781.pdf), generated with kicad-footprint-generator Molex 734 Male header (for PCBs); Angled solder pin 1 x 1 mm, 734-135 , 5 Pins per row, Mounting: Snap-in Plastic Peg PCB Lock (http://www.molex.com/pdm_docs/sd/039289068_sd.pdf), generated with kicad-footprint-generator Soldered wire connection, for a label // internal clock rate. One SPDT switch per step, to enable/disable gate per step. (10 One SPDT switch per step, to indicate direction? Pointer2 = 1; // [0:Flat, 1:Recessed, 2:Dome] // Do you want a large timer-knob style pointer? TimerKnob=0; // [0:No, 1:Yes] // Do you want finger ridges around the -y axis, where the stem radius adapts, as part of a pulldown resistor after D35. Connect a 100k resistor between coarse and +12V, value unknown Add position for resistor between coarse and +12V, value unknown Add position for resistor between coarse and +12V, value unknown master PSU/Synth.

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