Specifically, I want to know if the KY-022 module and KY-005 module can be used for heart beat detecting according to this tutorial?
If so, can you please explain to me how can I achieve such thing with respect to the following:
1- Is there any kind of synchronization between transmitter/receiver?
2- How to get a stable analog value from the receiver?
3- The Correlation between Heart beat rate and the obtained values?
providing circuit sketch will be very helpful but not necessary.
Thanks in advance.