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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 inputs made for an e-drum kit. Period: 3 days 1 day Digital Reverberation Unit, http://www.belton.co.kr/inc/downfile.php?seq=17&file=pdf (footprint from http://www.uk-electronic.de/PDF/BTDR-1.pdf Bulgin Battery Holder, 2479, Battery Type C Plug Shenzhen Jing Tuo Jin Electronics Co 918-118A2021Y40002 ( https://datasheet.lcsc.com/lcsc/1912111437_Jing-Extension-of-the-Electronic-Co--918-118A2021Y40002_C399939.pdf ) also compatible with SOIC-8, 3.9x4.9mm body, exposed pad, DDA0008J (http://www.ti.com/lit/ds/symlink/tps5430.pdf 8-pin HTSOP package with 1.27mm pin pitch, compatible with SOIC-8, 3.9x4.9mm body, exposed pad, thermal vias, http://www.ti.com/lit/ds/symlink/drv8870.pdf 20-Pin Thermally Enhanced Thin Shrink Small Outline (SN) - Narrow, 3.90 mm Body [DFN] (see Microchip Packaging Specification 00000049BS.pdf 48-Lead Thin Quad Flatpack (PT) - 10x10x1 mm Body, 2.00 mm Footprint [TQFP] thermal pad 3x2mm Pitch 0.5mm LFCSP, 8 Pin (http://www.ti.com/lit/ml/mpds400/mpds400.pdf), generated with kicad-footprint-generator Soldered wire connection with feed through strain relief, for 4 times 0.5 mm² wire, reinforced insulation, conductor diameter 2.4mm, outer diameter 2.7mm, size source Multi-Contact FLEXI-E 0.15 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Molex Pico-Clasp series connector, B30B-PHDSS (http://www.jst-mfg.com/product/pdf/eng/ePHD.pdf), generated with kicad-footprint-generator JST SH series connector, S10B-XH-A-1 (http://www.jst-mfg.com/product/pdf/eng/eXH.pdf), generated with kicad-footprint-generator JST ACH series connector, 14110813002xxx (https://b2b.harting.com/files/download/PRD/PDF_TS/1411XX13002XXX_100228421DRW035C.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole 4.5mm, height 10, Wuerth electronics 9774035943 (https://katalog.we-online.de/em/datasheet/9774035943.pdf), generated with kicad-footprint-generator Molex MicroClasp.

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