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PCB placement. Alternately, pot shafts could be done with a set screw. Set_screw = true; smooth = 20; // tweak on this and/or Hagiwo's quantizer, if 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 sufficiently detailed for a 1uF capacitor; expand a bit, but also size it for a single 1 mm² wires, basic insulation, conductor diameter 2mm, outer diameter 3.5mm, size 7x7.6mm^2, drill diamater 1.3mm, pad diameter 2.5mm, see http://cdn-reichelt.de/documents/datenblatt/C151/RND_205-00023_DB_EN.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block Phoenix PT-1,5-7-3.5-H pitch 3.5mm size 11.5x8.3mm^2 drill 1.3mm pad 2.5mm terminal block RND 205-00081 vertical pitch 5mm size 25x8.3mm^2 drill 1.3mm pad 2.5mm terminal block RND 205-00083 pitch 10mm size 15.8x8.2mm^2 drill 1.3mm pad 2.5mm terminal block RND 205-00084, vertical (cable from top), 4 pins, pitch 5mm, size 25x8.1mm^2, drill diamater 1.1mm, pad diameter 2.5mm, see http://cdn-reichelt.de/documents/datenblatt/C151/RND_205-00298_DB_EN.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block Metz Connect Type101_RT01604HBWC pitch 5.08mm size 50.8x10.6mm^2 drill 1.3mm pad 2.6mm terminal block RND 205-00082, 6 pins, pitch 5.08mm, size 81.3x9.8mm^2, drill diamater 1.2mm, pad diameter 3mm, size source Multi-Contact FLEXI-E 0.5 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times 0.75 mm² wire, reinforced insulation, conductor diameter 1.25mm, outer diameter 3.9mm, size source Multi-Contact FLEXI-E_0.25 (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 PicoBlade Connector System, 5267-13A, 13 Pins per row (https://www.hirose.com/product/document?clcode=CL0537-0694-9-81&productname=DF12C(3.0)-50DS-0.5V(81)&series=DF12&documenttype=2DDrawing&lang=en&documentid=0000994748), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-143-02-xxx-DV-BE-A, 43 Pins per row (http://www.molex.com/pdm_docs/sd/530470610_sd.pdf), generated with kicad-footprint-generator JST SUR series connector, S08B-ZESK-2D (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator Molex MicroClasp Wire-to-Board System, 55935-1230, 12 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xx-dv-xe-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-thru.pdf), generated with kicad-footprint-generator Molex SlimStack Fine-Pitch SMT Board-to-Board Connectors, 502430-3210, 32 Pins (http://www.molex.com/pdm_docs/sd/5024260810_sd.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole 3.2mm, height 8.6, Wuerth electronics 9774030951 (https://katalog.we-online.de/em/datasheet/9774030951.pdf), generated with kicad-footprint-generator Fuse SMD 1812 (4532 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size from: http://datasheets.avx.com/schottky.pdf), generated with kicad-footprint-generator Hirose series connector, S08B-ZESK-2D (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py WLCSP-35, 2.168x2.998mm, 35 Ball, 7x5 Layout, 0.4mm Pitch, https://www.st.com/resource/en/datasheet/stm32wb15cc.pdf#page=119 ST WLCSP-52, ST die ID 479, 3.56x3.52mm, 64 Ball.

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