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CR2016 DL2016 BR2020 CL2020 BR2025 CR2025 DL2025 DR2032 CR2032 DL2032 Keystone type 105 battery holder coin cell retainer Keystone type 104 battery holder for 18650 cylindrical cells http://www.keyelco.com/product.cfm/product_id/918 Keystone type 103 battery holder Keystone 2xAAA cell battery holder, Memory Protection Devices P/N BC12AAPC, http://www.memoryprotectiondevices.com/datasheets/BC12AAPC-datasheet.pdf BC2003 CR2032 2032 Battery Holder 18650 Battery Holder BH-331P 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, thermal vias, http://www.ti.com/lit/ds/symlink/drv8870.pdf 20-Pin Thermally Enhanced Thin Shrink Small Outline Narrow Body (http://www.analog.com/media/en/technical-documentation/data-sheets/ADuM7640_7641_7642_7643.pdf 24-Lead Plastic DFN (4mm x 3mm) (see Linear Technology 05081707_A_DHD16.pdf DH Package; 16-Lead Plastic HTSSOP (4.4x5x1.2mm); Thermal pad; (http://www.ti.com/lit/ds/symlink/drv8833.pdf HTSSOP, 16 Pin (http://www.st.com/resource/en/datasheet/lis331hh.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-107-02-xxx-DV-LC, 7 Pins (http://www.molex.com/pdm_docs/sd/559350530_sd.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole 3.3mm, height 15, Wuerth electronics 9774040243 (https://katalog.we-online.de/em/datasheet/9774040243.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-128-02-xxx-DV-BE-LC, 28 Pins per row (https://www.hirose.com/product/en/products/FH12/FH12-24S-0.5SH(55)/), generated with kicad-footprint-generator connector Molex MicroClasp Wire-to-Board System, 55935-0910, with PCB trace layout Checkpoint in case of crashes 943ef1409b Fix getting a bunch of wires backwards Fix floating pin for op amp in schmidt inverter mode, maybe both 7808 and hex inverter trigger are unnecessary? Alternative: Midi -> CV We could also be two separate players. MSD.

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