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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
Hi, That's a tricky one - it definitely looks broken. However I just checked on a Bangle here and that HRM app does now seem to have some issue with graphing the data. I'll look into it and will get that fixed - maybe when it's sorted you'll be able to see slightly better data.
You mention the raw data - you actually looked at the data from the
HRMevent and you're sure that the only stuff in there is -2 or 100? It seems pretty odd - and it'd be hard to imagine a hardware failure that caused those readings so it could just be software.