Project - 4 :- Gas and Smoke Detector By Using Arduino

                          PROJECT – Gas and Smoke Detector

In this tutorial you will learn how to use a Gas Sensor with Arduino and detect the

Flammable gas or smoke.           

                                                            STEP – 1: Components

Components Required:-

1.    Arduino Uno.

2.    Breadboard.

3.    Gas Sensor.

4.    LED.

5.    Buzzer.

6.    Wires.

                                         STEP – 2: Circuit

 
The connections are pretty easy, see the image above with the breadboard circuit schematic.

STEP – 3: Code 

/*******

All the resources for this project:

http://randomnerdtutorials.com/

*******/

int redLed = 12;

int greenLed = 11;

int buzzer = 10;

int smokeA0 = A5;

// Your threshold value

int sensorThres = 400;

void setup() {

pinMode(redLed, OUTPUT);

pinMode(greenLed, OUTPUT);

pinMode(buzzer, OUTPUT);

pinMode(smokeA0, INPUT);

Serial.begin(9600);

}

void loop() {

int analogSensor = analogRead(smokeA0);

Serial.print("Pin A0: ");

Serial.println(analogSensor);

// Checks if it has reached the threshold value

if (analogSensor > sensorThres)

{

digitalWrite(redLed, HIGH);

digitalWrite(greenLed, LOW);

tone(buzzer, 1000, 200);

}

else

{

digitalWrite(redLed, LOW);

digitalWrite(greenLed, HIGH);

noTone(buzzer);

}

delay(100);

}

 /* Copy above Code and Paste in Your Arduino Sketch */

Step 4: Well Done!

You have successfully completed one Arduino Project and you learned how to use a Gas Sensor with Arduino and also learned how to detect Flammable gas or smoke.

                   THANKYOU!

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