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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.
@yshui
For me, the heart rate is way off even at rest (measured 40~60 BPM while the real BPM is ~90 as measured by a pulse oximeter). Changing the poll interval to 20ms helps greatly, the result is nearly identical with the pulse oximeter at rest.
Could we maybe change the default poll interval to 20ms? What are the tradeoffs of doing that?