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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.
@Gordon
That's interesting - really the trade-off is power consumption. I just checked and it's
1mAwhen on at the default period, and1.6mAat 20ms.You could always just use the
Custom Boot Codeapp, pasteBangle.setOptions({hrmPollInterval:20})into it and that would fix it for you.In theory at 90 BPM there shouldn't really be a big problem with the default 25Hz poll interval - if you're running the HRM app can you still see a pretty clear pulse with it?
It's possible that the filter used for the algorithm is filtering out too much high frequency