Guys, I think this project is very helpful to you and you will be exited after this. In this project we are going to monitor human heartbeat using Heart Beat Sensor by the help of Arduino. So, let's start.
Components Required
| 1. | Arduino UNO | * 1 |
| 2. | Heart Beat Sensor | * 1 |
| 3. | Jumper Wires | * 1 |
Circuit Diagram
Program
#include <LiquidCrystal_I2C.h>
#include <Wire.h>
LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3,POSITIVE);
double alpha=0.75;
int period=20;
double refresh=0.0;
void setup(void)
{
pinMode(A0,INPUT);
lcd.begin(16,2);
lcd.clear();
lcd.setCursor(0,0);
}
void loop(void)
{
static double oldValue=0;
static double oldrefresh=0;
int beat=analogRead(A0);
double value=alpha*oldValue+(0-alpha)*beat;
refresh=value-oldValue;
lcd.setCursor(0,0);
lcd.print(" Heart Monitor ");
lcd.setCursor(0,1);
lcd.print(" ");
lcd.setCursor(0,1);
lcd.print(beat/10);
oldValue=value;
oldrefresh=refresh;
delay(period*10);
}