CORONARY ARTERY DISEASE

Project Description:

To design a heart rate detector that measures and displays the heart rate of a user in beats per minute (BPM) using an Arduino microcontroller and a pulse sensor, So that people can keep track of their heart rates and do the necessary exercises to improve their health.

Components Required:

• Arduino Uno With Cable x 1
• Pulse sensor x 1
• Jumper wires – Male To male x 2
  – Male To Female x 7
• LCD I2C display x 1
• breadboard small x 1

Connections:

Connection of Arduino with LCD I2C:

• Arduino pin 5v to VCC through a breadboard
• Arduino pin GND to GND through a breadboard
• Arduino pin A4 to SDA LCD I2C pin
• Arduino pin A5 to SCL LCD I2C pin

Connection of Arduino to Pulse Sensor

• Arduino pin A3 to signal the pulse sensor
• Arduino pin VCC to GND through a breadboard
• Arduino pin GND to GND through a breadboard

Conclusion

By following these steps, you can successfully create a heart rate detector that accurately measures and displays the user’s heart rate. This project is a good introduction to learning sensor interfacing and provides practical experience in working with Arduino and sensors, with a simplified hardware setup.

Circuit diagram:

NOTE:
Before uploading and running the code IN ARDUINO IDE:
Go to > Sketch > Include Library > Manage Libraries… > Type the library name
OR Go to > Sketch > Include Library > Add .ZIP Library… download the zip library from the link given below.

1. PulseSensorPlayground – https://github.com/WorldFamousElectronics/PulseSensorPlayground
2. LiquidCrystal_I2C – https://github.com/fdebrabander/Arduino-LiquidCrystal-I2C-library

Code:

#include <PulseSensorPlayground.h>
#include <LiquidCrystal_I2C.h>

const int PULSE_SENSOR_PIN = A3; 
const int LED_PIN = 13;          
const int THRESHOLD = 550;       
LiquidCrystal_I2C lcd(0x27, 16, 2);
PulseSensorPlayground pulseSensor;

void setup() {
  Serial.begin(9600);
  lcd.init();  //Start LCD Display
  lcd.backlight();
  
  pulseSensor.analogInput(PULSE_SENSOR_PIN);
  pulseSensor.blinkOnPulse(LED_PIN);
  pulseSensor.setThreshold(THRESHOLD);

  if (pulseSensor.begin()) {
    Serial.println("PulseSensor object created successfully!");
  }
}

void loop() {
  int currentBPM = pulseSensor.getBeatsPerMinute();

  if (pulseSensor.sawStartOfBeat()) {
    Serial.println("♥ A HeartBeat");
    Serial.print("BPM: ");
    Serial.println(currentBPM);
    lcd.clear();
    lcd.print(currentBPM);
  }

  delay(20);
}