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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.
@KTibow
HRM: 87 BPM (87% confidence)
Counting beats: 65 BPM
Google Fit (finger on camera): 95 BPM
I suppose the HRM event is more correct, and doing filtering. I still don't know why the Health app claims my heart rate is 40 though.