Pulse sensor

Stud1

Hi! 

I am using a pulse sensor . And I am not getting accurate result from that. sometime it display more than 600.

and if i switch the connection between analog and 3.3V it will display around 30.

can you please tell me how can i get the accurate result ?

Or give me accurate method to get accurate result of pulses .

Eric

• Which pulse sensor are you using?
  
• How is it connected to the board
  
• Which board are you using?
• What code are you using to read and configure the GPIO pins?
  

Stud1

Which pulse sensor are you using?

ans: I am using Heart rate pulse sensor. look at this https://mbientlab.com/product/heart-rate-pulse-sensor/

• How is it connected to the board 
• ans : Red pin : 3.3V or 5V Black pin : GND Purple pin : analog A0
• Which board are you using?
• ans : using Arduino UNO 
• What code are you using to read and configure the GPIO pins?
  
• ans :  download the file from the github (PulseSensorAmped_Arduino_1.5.0 ) . 

Eric

We do not provide Arduino support; this question is better suited for the Arduino forums.

In terms of how the pulse sensor is connected to a MetaWear board, you simply need to clear the output of pin 1 and read the ADC values from pin 0.  See the iOS HeartRate app for code specifics:

https://github.com/mbientlab-projects/iOSHeartRate/blob/master/HeartRate/HRViewController.m#L136