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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 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 PLCC, 68 pins, surface mount PLCC, 84 pins, surface mount PLCC, 28 pins, through hole 2.7mm, height 6, Wuerth electronics 9774100951 (https://katalog.we-online.de/em/datasheet/9774100951.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-133-02-xxx-DV-BE-A, 33 Pins per row (http://www.molex.com/pdm_docs/sd/530470610_sd.pdf), generated with kicad-footprint-generator Molex Mini-Universal MATE-N-LOK, old mpn/engineering number: 1-794067-x, 7 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 Molex MicroClasp Wire-to-Board System, 55935-0930, 9 Pins (https://www.molex.com/pdm_docs/sd/026605050_sd.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py HTSSOP, 24 Pin (https://pdfserv.maximintegrated.com/package_dwgs/21-0139.PDF), generated with kicad-footprint-generator JST PHD series connector, 502494-0870 (http://www.molex.com/pdm_docs/sd/5024940270_sd.pdf), generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for 3 times outer diameter, generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for 4 times 0.75 mm² wires, basic insulation, conductor diameter 0.9mm, outer diameter 1mm, size source Multi-Contact FLEXI-xV 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 Mounting Hardware, inside blind hole M1.6, height 2.5, Wuerth electronics 9774120360 (https://katalog.we-online.de/em/datasheet/9774120360.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py TSSOP28: plastic thin shrink small outline package; 32 leads; body width 4.4 mm; (see NXP SSOP-TSSOP-VSO-REFLOW.pdf and sot510-1_po.pdf TSSOP, 44 Pin (JEDEC MO-153 Var EF https://www.jedec.org/document_search?search_api_views_fulltext=MO-153), generated with kicad-footprint-generator Molex Mini-Fit Jr. Power Connectors, 105309-xx04, 4 Pins per row (http://www.molex.com/pdm_docs/sd/022035035_sd.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py WQFN, 16 Pin (https://www.onsemi.com/pub/Collateral/NCN4555-D.PDF), generated with kicad-footprint-generator JST SH side entry JST VH series connector, B13B-EH-A (http://www.jst-mfg.com/product/pdf/eng/eEH.pdf), generated with kicad-footprint-generator Molex MicroClasp Wire-to-Board System, 55935-1230, 12 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 Hirose DF13 through hole, DF13-06P-1.25DS, 6 Pins per row (http://www.molex.com/pdm_docs/sd/431605304_sd.pdf), generated with kicad-footprint-generator JST PUD series connector, S11B-XASK-1 (http://www.jst-mfg.com/product/pdf/eng/eXA1.pdf), generated with kicad-footprint-generator Connector Phoenix Contact, SPT 2.5/9-V-5.0-EX Terminal Block, 1732593 (https://www.phoenixcontact.com/online/portal/gb/?uri=pxc-oc-itemdetail:pid=1732593), generated with kicad-footprint-generator.

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