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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
I'll check it tomorrow ! Thanks a bunch. I'll give you my feedbacks, for sure.
Also, I tried to use the Recorder app while running. Your watch was on the forescreen and I used an external bluetooth device for a more precise HRM. It drained the battery from 80% to flat. I made a post about a running app btw :)...