Nice, thank you for sharing. Not very surprised about the use of running speed and cadence profile as there is no profile for voltage reporting (battery service can only report a percentage).

Hello there @Masonkante - I recommend that you check out my current build for reference to battery powering a custom board. I have created a board that uses a ATmega328p-au powered through a coin cell battery to act as a switch module. By all means use my thread for information on how to create a low powered arduino alternative for your desired needs. Thanks, Sam.

@drock1985 Maybe some hints here.