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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 WiFi, https://www.adafruit.com/product/2471 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 M3, height 2.6, Wuerth electronics 9774035243 (https://katalog.we-online.de/em/datasheet/9774035243.pdf), generated with kicad-footprint-generator connector JST J2100 series connector, B2B-XH-AM, with boss (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator JST EH vertical JST XA series connector, 78171-0002 (http://www.molex.com/pdm_docs/sd/781710002_sd.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 56 Pin (http://ww1.microchip.com/downloads/en/DeviceDoc/00002142A.pdf#page=40), generated with kicad-footprint-generator Molex Panelmate series connector, B3B-PH-K (http://www.jst-mfg.com/product/pdf/eng/ePH.pdf), generated with kicad-footprint-generator Hirose DF13C SMD, CL535-0415-4-51, 15 Pins per row, Mounting: Snap-in Plastic Peg PCB Lock (http://www.molex.com/pdm_docs/sd/039300020_sd.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-108-02-xx-DV-TE, 8 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 ipc_gullwing_generator.py TSSOP, 56 Pin (https://www.espressif.com/sites/default/files/documentation/esp32-s2_datasheet_en.pdf#page=41), generated with kicad-footprint-generator Soldered wire connection with feed through strain relief, for 6 times 2 mm² wires, basic insulation, conductor diameter 0.65mm, outer 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 outer diameter, generated with kicad-footprint-generator Soldered wire connection, for 6 times 2 mm² wire, reinforced insulation, conductor diameter 0.48mm, outer diameter 3.5mm, size 11.2x7mm^2, drill diamater 1.4mm, pad diameter 2.6mm, see http://www.farnell.com/datasheets/2138224.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_Phoenix THT Terminal Block Phoenix PT-1,5-7-5.0-H, 7 pins, pitch 5mm, size 50x10mm^2, drill diamater 1.1mm, pad diameter 2.4mm, see http://www.4uconnector.com/online/object/4udrawing/20001.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block Phoenix MKDS-3-15-5.08 pitch 5.08mm length 10mm width 5mm Capacitor C, Rect series, Radial, pin pitch=5.00mm, , diameter*width=4.3*1.9mm^2, Capacitor, http://www.vishay.com/docs/45233/krseries.pdf C Disc series Radial pin pitch 7.50mm diameter 10mm Electrolytic Capacitor CP Radial series Radial pin pitch 5.00mm diameter 10mm Electrolytic Capacitor CP, Radial series, Radial, pin pitch=2.00mm, diameter=5mm, height=7mm, Non-Polar Electrolytic Capacitor CP Axial series Axial Vertical pin pitch.

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