Heart Rate Monitor using Arduino

Required Parts:
Software:
1.Arduino IDE

Hardware:
1.Arduino Uno
2.16x2 LCD display
3.Heart Rate Module

Heart Rate Serial Monitor:
Circuit Diagrams:

Arduino Code:

int rate;
int in = 8;
unsigned long time2,time1;
unsigned long time;
void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:
int  k=0;

  while(k<5)
    {
     if(digitalRead(in))
     {
      if(k==0)
      time1=millis();
      k++;
      while(digitalRead(in));
     }
    }
    time2=millis();
      rate=time2-time1;
      rate=rate/5;
      rate=60000/rate;
      Serial.println(rate);

}

Serial Monitor Output:

Heart Rate Monitor with LCD display:

Circuit Diagrams:

Arduino Code:

#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 10, 9, 8, 7);
int rate=0;
int in = 6;
unsigned long time2,time1;
unsigned long time;

byte heart[8] = 
{
  0b00000,
  0b01010,
  0b11111,
  0b11111,
  0b11111,
  0b01110,
  0b00100,
  0b00000
};

void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
lcd.begin(16, 2);
lcd.setCursor(3, 0);
lcd.print("NEMP Group");
delay(5000);
lcd.clear();
lcd.createChar(1, heart);
lcd.setCursor(12, 0);
lcd.write(1);
lcd.setCursor(0, 0);
lcd.print("Your Heart");
}

void loop() {
  // put your main code here, to run repeatedly:
int  k=0;
    while(k<5)
    {
     if(digitalRead(in))
     {
      
      if(k==0)
      time1=millis();
       
      k++;
      while(digitalRead(in));
     }
    }
    time2=millis();
      rate=time2-time1;
      rate=rate/5;
      rate=60000/rate;
      Serial.println(rate);
      lcd.setCursor(13,0);
      lcd.print(rate);   
      delay(10);
       
      if((rate>60) && (rate<100))
      {
        lcd.setCursor(2,1);
        lcd.print("  Normal Beat  ");
        }
        else if(rate<60)
        {
        lcd.setCursor(1,1);
        lcd.print("  Low Beat   "); 
        }
         else if(rate>100)
        {
        lcd.setCursor(1,1);
        lcd.print("Abnormal Beat"); 
        }
         
}