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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.
@Fteacher
With the latest firmwares v14.12 and v14.14, I have issues with my external BTHRM. Technically, the bthrm app sees the polar device when I scan (in settings), but then, when I start the bthrm app, there's nothing coming out from BTHRM, I don't get any data out of it, only the wrist HRM. I was thinking that my external device is dead, but I flashed the firmware V13 and the data reached the watch. V14 also works fine.
I'm an early backer and I flashed almost every latest firmware as soon as it was available. This issue disappeared and reappeared on a regular basis. I have no technical knowledge, but from my perspective, some versions of the firmware break the transmission of the BTHRM data to the watch.