Maybe if you can find the Feather on the nRF Connect app, then take a screenshot we can find a way to detect it.
Potentially it may advertise the service UUID for Nordic UART or something like that?
@Gordon started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Maybe if you can find the Feather on the nRF Connect app, then take a screenshot we can find a way to detect it.
Potentially it may advertise the service UUID for Nordic UART or something like that?