OVERVIEW
INTRODUCTION
The Heart Beat Sensor is designed to provide
analog output of heart beat when a finger is placed on it. When the Heart
detector starts working, the top most LED will starts flashing with every heart
beat. The output of this sensor can be connected to Micro Controller directly
to measure the heart beat. It functions on the principle of light modulation by
blood flow through the nerves of the finger at every pulse. The module output
mode, analog output mode is simple.
FEATURES
- Heart beat indication by LED
- Instant output analog signal for directly connecting to micro controller
- Module output mode, analog output is simple.
- Compact Size
- Working Voltage +5V DC
- High quality PCB FR4 Grade with FPT Certified.
WORKING
Connect gnd to
ground ,Vcc to +5v of any board connect Out to any of the port pins
Check the variation in LED.It counts the number of pulses
ARDUINO CODE
int count=0;
void setup() {
Serial.begin(9600); // initialize serial communication at 9600 bits per
second
pinMode(8, INPUT);
}
void loop()
// the loop routine runs over and over again
forever:
{
for(int i=0;i<120;i++)
{
if(digitalRead(8)==0)
{
count++;
}
delay(500);
}
Serial.println("heatbeat rate=");
Serial.println(count);
count=0;
delay(1); // delay in
between reads for stability
}
OUTPUT
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