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BackType 104 battery holder Keystone type 3001 coin cell vertical battery CR-2025 coin cell vertical Panasonic CR-1220/VCN battery, https://industrial.panasonic.com/cdbs/www-data/pdf2/AAA4000/AAA4000D140.PDF battery CR-1220 coin cell cr1216 cr1220 cr1225 1xPP3 (9V) battery holder, Memory Protection Devices P/N BC12AAPC, http://www.memoryprotectiondevices.com/datasheets/BC12AAPC-datasheet.pdf BC2003 CR2032 2032 Battery Holder (http://www.memoryprotectiondevices.com/datasheets/BK-18650-PC2-datasheet.pdf Keystone Battery Holder, Keystone, Plastic Case, http://www.keyelco.com/product-pdf.cfm?p=1031 AAA battery cell holder Keystone Battery Holder, Keystone, Plastic Case, http://www.keyelco.com/product-pdf.cfm?p=1031 AAA battery holder Keystone 2xAAA cell battery holder, Keystone P/N 2468, http://www.keyelco.com/product-pdf.cfm?p=1033 AAA battery cell holder CR2032 retainer clip, SMT ( http://www.farnell.com/datasheets/1505853.pdf BC-2001 CR2032 2032 Battery Holder BH-331P Battery Type 3xAA (Script generated with kicad-footprint-generator Hirose FH12, FFC/FPC connector, FH12-53S-0.5SH, 53 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 SlimStack Fine-Pitch SMT Board-to-Board Connectors, 502430-4410, 44 Pins (http://www.molex.com/pdm_docs/sd/5024260810_sd.pdf), generated with kicad-footprint-generator JST ZE side entry JST VH series connector, DF3EA-06P-2H (https://www.hirose.com/product/document?clcode=CL0543-0332-0-51&productname=DF3EA-5P-2H(51)&series=DF3&documenttype=2DDrawing⟨=en&documentid=0001163317), generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for a resistor footprint between +12V and Reset In socket Reset Socket to U3-3 = capacitor measurement roughly 15nF (has a resistor limiting max drone frequency:
re-re-remove the mysterious extra trace.