Inaccurate results

[PriyaSindkar]

I am getting inaccurate results when I take the readings 5 times back to back.. these are the following readings I am getting: 77, 59, 65, 65, 77

Has anyone faced this issue too? or is it just my pulses that are fluctuating? If the issue is real I would really like a solution as it's causing a bottleneck in my project.

[thomcz]

I can't tell you if the project calculates your heart rate right, but it's normal that if your measure your heart rate 5 times it should never be the same because your heart beats irregular. If you want to learn more about read this: https://en.wikipedia.org/wiki/Heart_rate_variability

[groupboard]

The problem is that the algorithm used is very basic...it just measures a heartbeat whenever the red intensity goes below the average. If there's any noise in the signal then you'll end up getting multiple beats counted for one actual heartbeat.