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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.
@Mi
Did a first statistic of current state HR when moving but not heavily (walking and in car as a passanger). By mistake posted this in other thread:
http://forum.espruino.com/comments/16387601/
In essence: pretty good when confidence >90 which was the case in a little bit over 10% of the readings. For other times the standard deviation gets much higher but when averaging the values are not totally off for more than half the time.