Hello guys, what is the best way to do the calibration of PulseSensor and calculate the beats per minutes ?
Use the example code which came with your sensor.
If you didn't get any example code, then buy a different one which does have examples of Arduino code.
Use the code provided by the maker: pulsesensor.com
The sensor measures the time between beats, averages the last 10 beats, then divides 60000 by the average, and that is the BPM.
I'm working in a project that takes the real-time of the interbeats (IBI) to find the Heart Rate Variation.