Flame detection alarm

In this tutorial, we will find out how to make your room alert to detect any flame.

There are three parts in this tutorial:

Introduction to Flame Sensor

Circuit diagram

Code Schematics

Introduction to Flame Sensor

The Flame sensor used in this tutorial is a IR Flame detector

When a fire is lit, it emits a small amount of infrared light

This light is detected using the flame sensor

Basically, it is an Ir sensor with only a IR receiver

Circuit diagram

In this project, we use the flame sensor as an digital input device

CONNECTIONS:

VCC - 5v

GND - GND

DO - pin 4

LED(positive) - 13

LED(negative) - GND

Buzzer(positive) - pin 3

Buzzer(negative) - GND

How it works:

If the sensor detects fire, it will activate the buzzer and led

and it will print "Flame detected" on serial

Code schematics:

This code will first define led, buzzer, flame_sensor and flame_detected

int buzzer = 3;

int LED = 13;

int flame_sensor = 4;

int flame_detected;

next it will define flame_detected, LED, Buzzer and start Serial

void setup()

{

Serial.begin(9600);

pinMode(buzzer, OUTPUT);

pinMode(LED, OUTPUT);

pinMode(flame_sensor, INPUT);

}

Then, it will start void loop

void loop()

{

flame_detected = digitalRead(flame_sensor);

if (flame_detected == 1)

{

Serial.println("Flame detected.");

tone(buzzer,65,500)

delay(500)

digitalWrite(LED, HIGH);

delay(200);

digitalWrite(LED, LOW);

delay(200);

}

else

{

Serial.println("no fire detected");

digitalWrite(LED, LOW);

}

delay(1000);

}