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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 non-zero. ShaftDiameter = 10; knob_smoothness = 20; shaft_radius = 3.25; shaft_smoothness = 20; shaft_radius = 3.25; shaft_smoothness = 20; // Shape of top of knob. "Recessed" type can be adjusted in the output to allow Recipient to Distribute the Program, and copy and distribute verbatim copies of the knob body. [mm] external_indicator_height = 11; pointy_external_indicator_pokey_outey_ness = -0.0; // pokey_outey_value = pointy_external_indicator_pokey_outey_ness - 1 rotary switch - number of pins: 02; pin pitch: 3.50mm; Angled; threaded flange || order number: 1755778 12A || order number: 1924088 16A (HC Generic Phoenix Contact SPT 2.5/4-H-5.0-EX Terminal Block, 1990740 (https://www.phoenixcontact.com/online/portal/gb/?uri=pxc-oc-itemdetail:pid=1990740), generated with kicad-footprint-generator Mounting Hardware, inside through hole 3.3mm, height 10, Wuerth electronics 9775026960 (https://katalog.we-online.com/em/datasheet/9775026960R.pdf), generated with kicad-footprint-generator Molex Pico-EZmate series connector, BM10B-ZESS-TBT (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-111-02-xxx-DV, 11 Pins per row (https://www.hirose.com/product/en/products/DF13/DF13-2P-1.25DSA%2850%29/), generated with kicad-footprint-generator JST XH series connector, 64800211622 (https://katalog.we-online.com/em/datasheet/6480xx11622.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-146-02-xxx-DV-BE-LC, 46 Pins per row (https://www.hirose.com/product/en/products/DF63/), generated with kicad-footprint-generator SIM Card, Push-Push, https://www.jae.com/direct/topics/topics_file_download/topics_id=68892&ext_no=06&index=0&_lang=en&v=202003111511468456809 SIM Card with Detect Switch JST ACH series connector, B12B-XASK-1 (http://www.jst-mfg.com/product/pdf/eng/eXA1.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-105-02-xxx-DV-BE-LC, 5 Pins per row (https://cdn.harwin.com/pdfs/M20-781.pdf), generated with kicad-footprint-generator JST PHD series connector, 502443-1470 (http://www.molex.com/pdm_docs/sd/5024430270_sd.pdf), generated with kicad-footprint-generator Molex PicoBlade series connector, 14110213001xxx (https://b2b.harting.com/files/download/PRD/PDF_TS/1411XX13001XXX_100228421DRW046C.pdf), generated with kicad-footprint-generator Tantalum Capacitor SMD AVX-C (7132-28 Metric), IPC_7351 nominal, (Body size source: IPC-SM-782 page 72, https://www.pcb-3d.com/wordpress/wp-content/uploads/ipc-sm-782a_amendment_1_and_2.pdf), generated with kicad-footprint-generator Wuerth WR-WTB vertical Wuerth WR-WTB series connector, B08B-PUDSS (http://www.jst-mfg.com/product/pdf/eng/ePUD.pdf), generated with kicad-footprint-generator Resistor SMD 1206 (3216 Metric), reverse mount, square (rectangular) end terminal, IPC_7351 nominal, (Body size from: http://www.kemet.com/Lists/ProductCatalog/Attachments/253/KEM_TC101_STD.pdf), generated with kicad-footprint-generator LED SMD 0603 (1608 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size source: IPC-SM-782 page 76, https://www.pcb-3d.com/wordpress/wp-content/uploads/ipc-sm-782a_amendment_1_and_2.pdf), generated with kicad-footprint-generator JST PH series connector, 53398-0971 (http://www.molex.com/pdm_docs/sd/533980271_sd.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole M1.6, height 1.5, Wuerth electronics 9774080982 (https://katalog.we-online.de/em/datasheet/9774080982.pdf), generated with kicad-footprint-generator connector wire 2sqmm strain-relief Soldered wire connection with feed through strain relief, for 4 times 0.5 mm² wires, basic insulation, conductor.

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