Heart Beat Pulse Sensor

OVERVIEW:

-A Color-Coded Cable, with a standard male header connectors. Plug it straight into an Arduino or a Breadboard. No soldering   is required.

-The Pulse Sensor has 3 holes around the outside edge which make it easy to sew it into almost anything.

-Visualization software (made in Processing) to instantly see the output of the sensor and for troubleshooting.

PACKAGE INCLUDES:

1 PCS x Pulse Heart Beat Sensor

https://pulsesensor.com/

//SOURCE CODE TAKEN FROM BELOW LINK

// https://www.elecrow.com/wiki/index.php?title=Pulse_Sensor

//VARIABLES

int pulsePin = 0;                 // Pulse Sensor purple wire connected to analog pin 0

int blinkPin = 13;                // pin to blink led at each beat

int fadePin = 5;                  // pin to do fancy classy fading blink at each beat

int fadeRate = 0;                 // used to fade LED on with PWM on fadePin

// these variables are volatile because they are used during the interrupt service routine!

volatile int BPM;                   // used to hold the pulse rate

volatile int Signal;                // holds the incoming raw data

volatile int IBI = 600;             // holds the time between beats, must be seeded! 

volatile boolean Pulse = false;     // true when pulse wave is high, false when it's low

volatile boolean QS = false;        // becomes true when Arduoino finds a beat.

void setup(){

  pinMode(blinkPin,OUTPUT);         // pin that will blink to your heartbeat!

  pinMode(fadePin,OUTPUT);          // pin that will fade to your heartbeat!

  Serial.begin(115200);             // we agree to talk fast!

  interruptSetup();                 // sets up to read Pulse Sensor signal every 2mS 

   // UN-COMMENT THE NEXT LINE IF YOU ARE POWERING The Pulse Sensor AT LOW VOLTAGE, 

   // AND APPLY THAT VOLTAGE TO THE A-REF PIN

   //analogReference(EXTERNAL);   

}

void loop(){

  sendDataToProcessing('S', Signal);     // send Processing the raw Pulse Sensor data

  if (QS == true){                       // Quantified Self flag is true when arduino finds a heartbeat

        fadeRate = 255;                  // Set 'fadeRate' Variable to 255 to fade LED with pulse

        sendDataToProcessing('B',BPM);   // send heart rate with a 'B' prefix

        sendDataToProcessing('Q',IBI);   // send time between beats with a 'Q' prefix

        QS = false;                      // reset the Quantified Self flag for next time    

     }

  ledFadeToBeat();

  delay(20);                             //  take a break

}

void ledFadeToBeat(){

    fadeRate -= 15;                         //  set LED fade value

    fadeRate = constrain(fadeRate,0,255);   //  keep LED fade value from going into negative numbers!

    analogWrite(fadePin,fadeRate);          //  fade LED

  }

void sendDataToProcessing(char symbol, int data ){

    Serial.print(symbol);                // symbol prefix tells Processing what type of data is coming

    Serial.println(data);                // the data to send culminating in a carriage return

  }

15 DAYS