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SW15 (once/stop) and cascade out is easier done via skywiring; only one cross-board wire is needed, vs 3 if the Program by any entity (including a cross-claim or counterclaim 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 a diameter between 16-19 mm: https://www.keyelco.com/product.cfm/product_id/826 Keystone #500, 12mm CR1220 battery holder, Memory Protection Devices P/N BC12AAPC, http://www.memoryprotectiondevices.com/datasheets/BC12AAPC-datasheet.pdf BC2003 CR2032 2032 Battery Holder BH-331P Battery Type C Receptacle, GCT, power-only, 6P, top mounted, horizontal, 5A: https://gct.co/files/drawings/usb4105.pdf USB C Type-C USB3 receptacle SMD USB Micro-B receptacle, horizontal, SMD, 10118194, https://cdn.amphenol-icc.com/media/wysiwyg/files/drawing/10118194.pdf USB Micro B horizontal dustproof waterproof IP67 XKB Connectivity, USB Micro-B, right-angle, SMT, https://datasheet.lcsc.com/lcsc/2204071530_G-Switch-GT-USB-7010ASV_C2988369.pdf USB Type B SMT Horizontal 5 Contacts (https://katalog.we-online.de/em/datasheet/65100516121.pdf Mini USB 2.0 Type B SMT Horizontal 5 Contacts (https://katalog.we-online.de/em/datasheet/65100516121.pdf Mini USB 2.0 receptacle type B, horizontal version, through-hole, https://downloads.lumberg.com/datenblaetter/en/2411_02.pdf USB B vertical female connector straight vertical THT male pitch 2.77x2.84mm pin-PCB-offset 9.4mm 44-pin D-Sub connector horizontal with green/orange LEDs https://katalog.we-online.de/pbs/datasheet/7499010121A.pdf LAN-Transformer WE-RJ45LAN 10/100/1000 BaseT Wuerth 7499151120, LAN-Transformer WE-RJ45LAN 10/100/1000 BaseT Wuerth 7499151120, LAN-Transformer WE-RJ45LAN 10/100/1000 BaseT, Dual Ethernet Jack (http://katalog.we-online.de/pbs/datasheet/7499151120.pdf RJ45 LAN Transformer 10/100BaseT (https://katalog.we-online.de/pbs/datasheet/74980111211.pdf 36pin mini SAS connector, http://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=1888174&DocType=Customer+Drawing&DocLang=English Molex LSHM 0.50 mm Razor Beam High-Speed Hermaphroditic Terminal/Socket Strip, LSHM-110-xx.x-x-DV-N, 10 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 Resistor SMD 1206 https://ww2.minicircuits.com/case_style/FV1206-1.pdf Mini-Circuits Filter SMD 1206 https://ww2.minicircuits.com/case_style/FV1206-1.pdf Mini-Circuits Filter SMD 1206 https://ww2.minicircuits.com/case_style/FV1206-4.pdf Mini-Circuits Filter SMD 1206 https://ww2.minicircuits.com/case_style/FV1206.pdf Mini-Circuits Filter SMD 1206 (3216 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size source: https://www.vishay.com/docs/20052/crcw0201e3.pdf), generated with kicad-footprint-generator connector JST GH series connector, S05B-XASK-1 (http://www.jst-mfg.com/product/pdf/eng/eXA1.pdf), generated with kicad-footprint-generator Harting har-flexicon series connector, S8B-PH-K (http://www.jst-mfg.com/product/pdf/eng/ePH.pdf), generated with kicad-footprint-generator Molex Mini-Universal MATE-N-LOK, old mpn/engineering number: 1-794071-x, 11 Pins per row (https://www.hirose.com/product/document?clcode=&productname=&series=DF11&documenttype=Catalog&lang=en&documentid=D31688_en), 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 (http://www.molex.com/pdm_docs/sd/428202214_sd.pdf), generated with kicad-footprint-generator Molex SPOX Connector System, 5267-04A, 4 Pins (http://www.farnell.com/datasheets/2157639.pdf), generated with kicad-footprint-generator connector Molex KK-396 horizontal Molex MicroClasp Wire-to-Board System, 55935-1130, 11 Pins per row (https://www.molex.com/pdm_docs/sd/022057045_sd.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole M3, height 9, Wuerth electronics 9774025960 (https://katalog.we-online.de/em/datasheet/9774025960.pdf,), generated with kicad-footprint-generator Molex Mini-Fit Jr. Power Connectors, 42819-42XX, 4 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 connector Molex SPOX Connector System, 53047-0810, 8 Pins per.

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