MQ-5 GAS LEAK DETECTOR

 This project is used to detect the gas leak and alert us that the gas is leaking. You can use it for your science projects.

FOR VIDEO :

THING'S NEEDED

1. Arduino UNO R3
2. MQ-5 Gas Sensor
3. 2 - LEDS
4. Buzzer

CIRCUIT DIAGRAM

WIRING

SENSOR TO ARDUINO

• Connect the Vcc Pin of sensor to 5V of Arduino.
• Connect the GND pin of sensor to GND of Arduino.
• Connect the AO (analogOutput) of sensor to pin A0 of Arduino.

LED & BUZZER TO ARDUINO

• Connect the Red LED to pin 2 of Arduino.
• Connect the Green LED to pin 3 of Arduino.
• Connect the Buzzer to pin 4 of Arduino.

CODE

// scientist BENIEL'S LAB

// GAS DETECTOR

int Input = A0;

int R_LED = 2;

int G_LED = 3;

int Buzzer = 4;

// VAL INTEGER

int val;

int MAX = 400;

void setup() {

  Serial.begin(9600);

  pinMode(Input ,INPUT);

  pinMode(R_LED ,OUTPUT);

  pinMode(G_LED ,OUTPUT);

  pinMode(Buzzer ,OUTPUT);

}

void loop() {

  val = analogRead(A0);

  if (val >= MAX) {

    digitalWrite(R_LED ,HIGH);

    digitalWrite(Buzzer ,HIGH);

    digitalWrite(G_LED ,LOW);

    Serial.println("GAS LEAKING");

  }

  else {

    digitalWrite(R_LED ,LOW);

    digitalWrite(Buzzer ,LOW);

    digitalWrite(G_LED ,HIGH);

    Serial.println("NORMAL");

  }

}

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THANK YOU