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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.
@nravanelli
@user145221 Yeah, your log.csv file is probably too big.
By 'gold standard', do you mean another PPG sensor? ECG/EKG chest straps are the ideal reference and would be your gold standard here. Another PPG sensor might have the same issues (i.e. movement artifacts).