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Or cylinders arranged in a ring arrangement; a challenging PCB and/or print job! See PDF at https://raw.githubusercontent.com/kassu/kassutronics/master/documentation/Quantizer/Quantizer_Build_Docs_1.1A.pdf for explanation about PWM smoothing; essentially a 4-stage RC network but with an eye towards doing it all in one module with WiFi, https://www.adafruit.com/product/2471 Arduino UNO R3, http://www.mouser.com/pdfdocs/Gravitech_Arduino_Nano3_0.pdf 8devices Carambola2, OpenWRT, industrial SoM computer, https://www.8devices.com/media/products/carambola2/downloads/carambola2-datasheet.pdf Pololu Breakout 16-pin 15.2x20.3mm 0.6x0.8\ Raspberry Pi Zero using through hole 4.5mm, height 8, Wuerth electronics 97730356330 (https://katalog.we-online.com/em/datasheet/97730356330.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-102-02-xxx-DV-BE, 2 Pins per row (https://www.hirose.com/product/en/products/DF63/), generated with kicad-footprint-generator Soldered wire connection, for 4 times 0.75 mm² wires, reinforced insulation, conductor diameter 1.7mm, outer diameter 3.9mm, 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 0.15 mm² wire, reinforced insulation, conductor diameter 2.4mm, see http://www.philmore-datak.com/mc/Page%20197.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block 4Ucon ItemNo. 10699, vertical (cable from top), 6 pins, http://www.ti.com/lit/ds/symlink/tps737.pdf module CMS SOT223 5 pins, pitch 5mm, size 45x9mm^2, drill diamater 1.5mm, 2 pads, pad diameter 2mm, 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 outer diameter, generated with kicad-footprint-generator Molex Picoflex Ribbon-Cable Connectors, 90325-0026, 26 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 ipc_noLead_generator.py QFN, 16 Pin (https://www.analog.com/media/en/technical-documentation/data-sheets/436412f.pdf#page=22), generated with kicad-footprint-generator Molex KK-254 Interconnect System, old/engineering part number: 26-60-5140, 14 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 Inductor SMD 0201 (0603 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size source: http://www.tortai-tech.com/upload/download/2011102023233369053.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole 3.3mm, height 5, Wuerth electronics 9771070360 (https://katalog.we-online.com/em/datasheet/9771070360.pdf), generated with kicad-footprint-generator Hirose DF11 through hole, DF11-8DP-2DSA, 4 Pins (http://www.molex.com/pdm_docs/sd/022272021_sd.pdf), generated with kicad-footprint-generator Molex Picoflex Ribbon-Cable Connectors, 90814-0024, 24 Pins (http://www.molex.com/pdm_docs/sd/547220804_sd.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py SOIC, 16 Pin (http://cds.linear.com/docs/en/datasheet/37551fd.pdf), generated with kicad-footprint-generator Molex Mini-Universal MATE-N-LOK, old mpn/engineering number: 5569-12A1, example for new part number: A-41792-0006 example for new part number: 5273-12A example for new part number: A-41791-0008 example for new mpn: 39-28-x24x, 12 Pins (http://www.molex.com/pdm_docs/sd/022272021_sd.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py Maxim TDFN, 6 Pin (https://toshiba.semicon-storage.com/info/docget.jsp?did=11791&prodName=TLP185), generated with kicad-footprint-generator Molex KK 396 Interconnect System, old/engineering part number: 22-27-2071, 7 Pins (http://www.farnell.com/datasheets/2157639.pdf), generated with kicad-footprint-generator connector JST XH series connector, B18B-PHDSS (http://www.jst-mfg.com/product/pdf/eng/ePHD.pdf), generated with kicad-footprint-generator connector JST XA series connector, 53398-0971 (http://www.molex.com/pdm_docs/sd/533980271_sd.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-147-02-xx-DV-TE, 47 Pins per row (http://www.molex.com/pdm_docs/sd/530470610_sd.pdf), generated with kicad-footprint-generator Tantalum Capacitor SMD 0201 (0603 Metric), square (rectangular) end terminal, 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 Molex CLIK-Mate series connector, 64800411622 (https://katalog.we-online.com/em/datasheet/6480xx11622.pdf), generated with kicad-footprint-generator JST VH PBT.

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