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Heart rate sensor output confusion

Posted: Sat May 29, 2021 3:59 am
by Mikxas
Hi I’m using an arduino heart rate sensor on the nuclei f411re board and I am getting output values of 2000-3500 when not pressed and values between 0-10 when pressed I can’t find much information about it online and I was wondering what do these numbers exactly mean? On the internet I have seen outputs of arduino between 60-100.
this is the sensor I am using.
https://www.auselectronicsdirect.com.au ... JwQAvD_BwE

Re: Heart rate sensor output confusion

Posted: Sat May 29, 2021 5:49 am
by ag123
most of these are simply an IR led / IR sensor pair.

i won't be surprised if they aren't different from the cheap TCRT5000
https://www.vishay.com/optical-sensors/ ... uct-83760/
https://www.aliexpress.com/wholesale?ca ... t=tcrt5000