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Momentary-normal-off pushbutton to manually reset. - One idea: add a voltage to trigger steps. Replace C10 with 100K resistor, and bridge out R44 with a diameter between 16-19 mm: https://www.keyelco.com/product.cfm/product_id/826 Keystone #500, CR1220 battery holder, http://www.keyelco.com/product-pdf.cfm?p=710 AA CR2 A battery holder Keystone 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 Korean HRO Parts Elec TYPE-C-31-G-06 USB Type-C 3.0 Receptacle, 24-pin, right angle tact switch https://www.e-switch.com/system/asset/product_line/data_sheet/148/TL1250.pdf led push switch right angle (http://www.molex.com/pdm_docs/sd/467651301_sd.pdf hdmi micro type d right angle SPDT push button https://www.e-switch.com/system/asset/product_line/data_sheet/210/800U.pdf CuK miniature slide switch, EG series, SPDT, right angle, http://spec_sheets.e-switch.com/specs/P040042.pdf E-Switch sub miniature slide switch, JS series, DPDT, right angle, https://omronfs.omron.com/en_US/ecb/products/pdf/en-b3f.pdf tactile switch D MEC 5E single pole normally-open tactile switch SPST right angle, PTS645VL83-2 LFS C&K Button SW PUSH 12mm http://katalog.we-online.de/em/datasheet/430476085716.pdf tact sw push 12mm SW PUSH 12mm http://katalog.we-online.de/em/datasheet/430476085716.pdf tact sw push PVA1 DPST momentary / push-push button, h=15mm C&K PVA1 https://www.ckswitches.com/media/1343/pva.pdf momentary .

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