Heart Rate Sensor (Pulse Sensor Amped)

Heart Rate Sensor

smart_watch

Detecting Heart Rate

image-20221101172350013

Pulse Sensor Amped

  • Measure heart rate on finger
  • Green light useful (like Apple Watch)

Pulse Sensor Amped Wiring

Sensor Photon 2 Function
GND GND Ground
VCC 3V3 Power (requires 3.3v)
Data Analog Pin Data

Library

  • From Workbench, install the library PulseSensorAmped_P2

Configuration

#include <PulseSensorAmped.h>	//sensor library
const int PIN_PULSE = A0; // any analog pin
PulseSensor PulseSensorAmped; //create pulse sensor object

Initialization

void setup() {
   analogRead(PIN_PULSE); // this is a workaround for a problem in the PulseSensorAmped library
    
   PulseSensorAmped.attach(PIN_PULSE);
   PulseSensorAmped.start();

Note

  • analogRead needs to be before the pulse sensor is initialized. This is a workaround to fix a problem in the library. For more information, see this post

Sensor Readings

  • The beats per minute can be read by adding the following function
void PulseSensorAmped_data(int BPM, int IBI) {
 // BPM will be the parameter that is the current Beats Per Minute
 // IBI will be the parameter that is the current Interbeat Interval
}

Other Useful Methods

  • The following function will be called when the signal is lost
void PulseSensorAmped_lost(void) {

}

Credits

Updated: