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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 non-zero. RingMarkings = 10; knob_radius_bottom = 10; // [1:1:84] /* [Holes] */ hole_dist_top = 2.5; // margins from edges h_margin = hole_dist_side + thickness; working_height = height - v_margin; working_increment = (working_height-v_margin+thickness) / (9); // generally-useful spacing amount for vertical columns of stuff // step rotary switch with LCD screen E3 SAxxxx switch normally-open pushbutton push-button LCD D MEC 5G single pole triple throw, 3 position switch, SP3T K switch SPST right angle, PTS645VL58-2 LFS tactile switch SPST angled PTS645VL83-2 LFS tactile switch http://www.ckswitches.com/media/1479/kmr2.pdf CK components KMR2 tactile switch with ground pin http://www.ckswitches.com/media/1479/kmr2.pdf tactile push button, 6x6mm e.g. PHAP33xx series, height=9.5mm tact sw push 12mm SW PUSH 12mm http://katalog.we-online.de/em/datasheet/430476085716.pdf tact sw push 12mm SW PUSH 12mm http://katalog.we-online.de/em/datasheet/430476085716.pdf tact sw push PVA1 DPST momentary / push-push button, h=20.5mm C&K PVA2 https://www.ckswitches.com/media/1343/pva.pdf momentary / push-push button, h=13mm C&K PVA2 https://www.ckswitches.com/media/1343/pva.pdf momentary / push-push button, h=17.5mm C&K PVA1 https://www.ckswitches.com/media/1343/pva.pdf tact sw push PVA1 DPST momentary / push-push button, h=23mm C&K PVA1 https://www.ckswitches.com/media/1343/pva.pdf momentary / push-push button, h=23mm C&K PVA1 https://www.ckswitches.com/media/1343/pva.pdf tact sw push PVA2 DPDT momentary / push-push button, h=23mm C&K PVA2 https://www.ckswitches.com/media/1343/pva.pdf momentary / push-push button, h=15mm C&K PVA2 https://www.ckswitches.com/media/1343/pva.pdf momentary / push-push button, h=15mm C&K PVA1 https://www.ckswitches.com/media/1343/pva.pdf momentary / push-push button, h=20.5mm C&K PVA1 https://www.ckswitches.com/media/1343/pva.pdf momentary / push-push button, h=17.5mm C&K PVA1 https://www.ckswitches.com/media/1343/pva.pdf momentary / push-push button, h=23mm C&K PVA1 https://www.ckswitches.com/media/1343/pva.pdf momentary / push-push button, h=23mm C&K PVA2 https://www.ckswitches.com/media/1343/pva.pdf right angle tht smd hybrid Harting har-flexicon series connector, B03B-JWPF-SK-R (http://www.jst-mfg.com/product/pdf/eng/eJWPF1.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py Diodes Incorporated (https://www.diodes.com/assets/Package-Files/U-DFN2510-10-Type-CJ.pdf U-DFN2020-6 (Type F) (https://www.diodes.com/assets/Package-Files/U-DFN2020-6-Type-F.pdf HVQFN, 16 Pin (JEDEC MO-153 Var FB https://www.jedec.org/document_search?search_api_views_fulltext=MO-153), generated with kicad-footprint-generator ipc_noLead_generator.py 20-Lead Frame Chip Scale Package - 9x9 mm Body [QFN]; (see Microchip Packaging Specification 00000049BS.pdf UQFN, 16 Pin (JEDEC MS-013AD, https://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/soic_wide-rw/RW_24.pdf), generated with kicad-footprint-generator Soldered wire connection with feed through strain relief, for 6 times 0.5 mm² wires, basic insulation, conductor diameter 1.25mm, outer diameter 1mm, size source Multi-Contact FLEXI-E 0.75 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times 2.5 mm² wires, basic insulation, conductor diameter 1.4mm, outer diameter 3.9mm, size source Multi-Contact FLEXI-xV 0.75 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator JST XH side entry Molex Sabre Power Connector, 43160-0104, With thermal vias in pads, 6 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator JST ZE series connector, LY20-24P-DT1, 12 Circuits (https://www.molex.com/pdm_docs/sd/2005280120_sd.pdf), generated with kicad-footprint-generator Mounting Hardware, inside.

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