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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, Keystone P/N 2468, http://www.keyelco.com/product-pdf.cfm?p=1033 AAA battery cell holder CR2032 retainer clip, SMT ( http://www.farnell.com/datasheets/1505853.pdf BC-2001 CR2032 2032 Battery Holder 2479 Battery Type C Receptacle, https://gct.co/Files/Drawings/USB4085.pdf USB Type-C Receptacle SMD GT-USB-7051A GT-USB-7051B USB 2.0 Type B Molex 734 Male header (for PCBs); Straight solder pin 1 x 1 mm, 734-150 , 20 Pins (http://www.farnell.com/datasheets/2157639.pdf), generated with kicad-footprint-generator Molex SPOX Connector System, 5268-06A, 6 Pins (http://www.farnell.com/datasheets/2157639.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py SOIC, 6 Pin (https://docs.broadcom.com/docs/AV02-4755EN), generated with kicad-footprint-generator Wuerth WR-WTB vertical Wuerth WR-WTB series connector, SM04B-SURS-TF (http://www.jst-mfg.com/product/pdf/eng/eSUR.pdf), generated with kicad-footprint-generator JST PH series connector, SM12B-SRSS-TB (http://www.jst-mfg.com/product/pdf/eng/eSH.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py SOT, 5 Pin Double Sided Module 16-pin module, column spacing 22.86 mm (900 mils), Socket THT DIP DIL PDIP 2.54mm 15.24mm 600mil Socket LongPads 4-lead though-hole mounted DIP package, row spacing 7.62 mm (300 mils THT DIP DIL ZIF 25.4mm 1000mil Socket 40-lead though-hole mounted DIP package, row spacing 7.62 mm (300 mils), body size 10.8x26.96mm 10x-dip-switch SPST KingTek_DSHP10TJ, Slide, row spacing 6.73 mm (264 mils.

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