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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.
@mauro.toro
Took me long enough to report back!
After some emails with Gordon, I got a replacement watch that is working. I'm able to see a signal that looks quite like a pulsating heart!
Many thanks for the help and prompt solution,
Suerte!