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                                            coniferconifer

Equation for SPO2, SpO2 = -23.3 * (R - 0.4) + 100;

Thank you for your interest. This is because a linear approximation of SpO2 from 100 to about 80 is sufficient for practical purposes. SpO2 below 80 is a difficult value...

Equation for SPO2, SpO2 = -23.3 * (R - 0.4) + 100;

It is OK to have three different linear approximation for ranges from 0.4 to 1, 1 to 2 and 3 to 3.5 , but less than SpO2 < 80 is...

Equation for SPO2, SpO2 = -23.3 * (R - 0.4) + 100;

I can not find where Sparkfun's library out puts an average of three raw data. Heart rate is calculated by finding zero crossing at falling point of AC component of...