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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 R2, http://www.mouser.com/pdfdocs/Gravitech_Arduino_Nano3_0.pdf Arduino UNO R2, http://www.mouser.com/pdfdocs/Gravitech_Arduino_Nano3_0.pdf 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 M2, height 1, Wuerth electronics 9774070243 (https://katalog.we-online.de/em/datasheet/9774070243.pdf), generated with kicad-footprint-generator Hirose DF12E SMD, DF12E3.0-10DP-0.5V, 10 Pins per row (http://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=82181_SOFTSHELL_HIGH_DENSITY&DocType=CS&DocLang=EN), generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for 2 times 0.127 mm² wires, reinforced insulation, conductor diameter 0.9mm, outer diameter 1.5mm, 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 ipc_gullwing_generator.py TSSOP, 20 Pin (https://pdfserv.maximintegrated.com/package_dwgs/21-0108.PDF U20E-1), generated with kicad-footprint-generator JST ZE series connector, B06B-XASK-1-A (http://www.jst-mfg.com/product/pdf/eng/eXA1.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py SOIC, 18 Pin (https://toshiba.semicon-storage.com/info/docget.jsp?did=30523), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-112-02-xxx-DV-BE-A, 12 Pins (https://www.molex.com/pdm_docs/sd/009652028_sd.pdf), generated with kicad-footprint-generator Inductor SMD 1812 (4532 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 Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-114-02-xxx-DV, 14 Pins per row (https://www.hirose.com/product/en/products/DF13/DF13-4P-1.25DS%2820%29/), generated with kicad-footprint-generator Mounting Hardware, inside blind hole M1.6, height 5, Wuerth electronics 9774140960 (https://katalog.we-online.de/em/datasheet/9774140960.pdf,), generated with kicad-footprint-generator Molex Mini-Fit Sr. Power Connectors, 105309-xx07, 7 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 JST ZE series connector, DF3EA-08P-2H (https://www.hirose.com/product/document?clcode=CL0543-0332-0-51&productname=DF3EA-5P-2H(51)&series=DF3&documenttype=2DDrawing⟨=en&documentid=0001163317), generated with kicad-footprint-generator Soldered wire connection with feed through strain relief, for 3 times outer diameter, generated with kicad-footprint-generator ipc_noLead_generator.py LFCSP, 28 Pin (http://ww1.microchip.com/downloads/en/PackagingSpec/00000049BQ.pdf#page=289), generated with kicad-footprint-generator JST ZE series connector, B14B-PUDSS (http://www.jst-mfg.com/product/pdf/eng/ePUD.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-112-02-xxx-DV-LC, 12 Pins (http://www.molex.com/pdm_docs/sd/559350210_sd.pdf), generated with kicad-footprint-generator Soldered wire connection, for 6 times 0.1 mm² wires, reinforced insulation, conductor diameter 0.48mm, 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 CLIK-Mate series connector, LY20-34P-DLT1, 17 Circuits (http://www.jae.com/z-en/pdf_download_exec.cfm?param=SJ103130.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/document?clcode=CL0537-0834-6-81&productname=DF12E(3.0)-50DP-0.5V(81)&series=DF12&documenttype=2DDrawing⟨=en&documentid=0000992393), generated with kicad-footprint-generator Molex Micro-Fit.

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