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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 lots of analog drum voices; based heavily on Moritz Klein's work, but with an eye towards doing it all in one module with lots of analog drum voices; based heavily on Moritz Klein's work, 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 3.2mm, height 5.6, Wuerth electronics 9774040243 (https://katalog.we-online.de/em/datasheet/9774040243.pdf), generated with kicad-footprint-generator Molex Molex 1.00mm Pitch Easy-On BackFlip, Right-Angle, Bottom Contact Style, 24 Circuits (https://www.molex.com/pdm_docs/sd/5022312400_sd.pdf Molex 0.50mm Pitch Easy-On BackFlip Type FFC/FPC, 52559-3652, 36 Circuits (https://www.molex.com/pdm_docs/sd/525593652_sd.pdf connector Molex Mega-Fit side entry Molex 734 Male header (for PCBs); Angled solder pin 1 x 1 mm, 734-169 , 9 Pins (http://www.molex.com/pdm_docs/sd/559320210_sd.pdf), generated with kicad-footprint-generator Capacitor SMD Kemet-C (6032-28 Metric), IPC_7351 nominal, (Body size from: 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 Molex SlimStack Fine-Pitch SMT Board-to-Board Connectors, 55560-0241, 24 Pins (http://www.molex.com/pdm_docs/sd/903250004_sd.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole 4.5mm, height 8, Wuerth electronics 9774015633 (https://katalog.we-online.com/em/datasheet/9774015633.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py TSSOP, 36 Pin (http://www.issi.com/WW/pdf/61-64C5128AL.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py TSSOP, 30 Pin (JEDEC MO-153 Var GC https://www.jedec.org/document_search?search_api_views_fulltext=MO-153), generated with kicad-footprint-generator XP_POWER IHxxxxD DIP DCDC-Converter XP_POWER IHxxxxD, DIP, (https://www.xppower.com/pdfs/SF_IH.pdf), generated with kicad-footprint-generator Harwin Female Vertical Surface Mount Single Row 2.54mm (0.1 inch) Pitch PCB Connector, M20-89009xx, 9 Pins per row (https://www.hirose.com/product/en/products/DF63/), generated with kicad-footprint-generator ipc_noLead_generator.py TDFN, 8 Pin (https://www.nxp.com/docs/en/data-sheet/TJA1051.pdf#page=16), generated with kicad-footprint-generator Capacitor SMD Kemet-T (3528-12 Metric), IPC_7351 nominal, (Body size source: https://www.vishay.com/docs/20035/dcrcwe3.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-149-02-xxx-DV-LC, 49 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 ipc_gullwing_generator.py SOIC, 28 Pin (JEDEC MO-153 Var DC https://www.jedec.org/document_search?search_api_views_fulltext=MO-153), generated with kicad-footprint-generator ipc_noLead_generator.py LFCSP, 16 Pin (https://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/lfcspcp/cp-16/CP_16_32.pdf), generated with kicad-footprint-generator Molex KK 396 Interconnect System, old/engineering part number: A-41791-0018 example for new part number: 5273-09A example for new.

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