I found these articles helpful/educational: * https://urish.medium.com/reverse-engineering-a-bluetooth-lightbulb-56580fcb7546 https://urish.medium.com/reverse-

I found these articles helpful/educational: * https://urish.medium.com/reverse-engineering-a-bluetooth-lightbulb-56580fcb7546 https://urish.medium.com/reverse-engineering-a-bluetooth-lig... * http://travisgoodspeed.blogspot.com/2011/12/introduction-to-bluetooth-rfcomm.html http://travisgoodspeed.blogspot.com/2011/12/introduction-to-... * https://github.com/dlenski/ttblue/blob/master/tt_bluetooth.md#reverse-engineered-ble-protocol https://github.com/dlenski/ttblue/blob/master/tt_bluetooth.m...