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Drill template, schematic, PCB design and CAD files - https://www.dropbox.com/sh/w0t70y3xsziw7q0/AACJRuXHWv5yB7v7swE4hh2ca?dl=0

Components:

Mosfets - https://www.digikey.com/product-detail/en/nexperia-usa-inc/PSMN0R9-25YLC,115/1727-5292-1-ND/2674297

Resistor - https://www.digikey.com/product-detail/en/yageo/RC0805JR-0715KL/311-15KARCT-ND/731205

Switch - https://www.digikey.com/product-detail/en/mec-switches/3ESH9-09.5/679-2216-ND/2034772 or https://www.digikey.com/product-detail/en/omron-electronics-inc-emc-div/B3SL-1005P/SW1203CT-ND/2627376

Mounting hardware:

“#0-80” screws, standoffs & washers:

https://www.mcmaster.com/91780a020

https://www.mcmaster.com/#91771a053/

https://www.mcmaster.com/#91772a051/

https://www.mcmaster.com/#92146a510/

Wiring:

Wire as labeled with 14-16 gauge silicone insulated wire (large pads) and 20-24 gauge (small pad).

Off board - wire battery positive to 510 positive with 14-16 gauge.