GAS SENSOR WITH BUZZER INDICATION INTERFACE USING ARDUINO - Project Center in Trichy IOT EEE Internship Final Year- Power Integrated

GAS SENSOR INTERFACE USING ARDUINO

🔥 Gas Sensor Interface with Arduino – Short Note

Overview:

A Gas Sensor (e.g., MQ-2, MQ-5, MQ-135) detects the presence of gases such as LPG, smoke, methane, carbon monoxide, and more. It is commonly used in safety systems and air quality monitoring.

✅Working Principle:

The gas sensor contains a chemical-sensitive material that changes resistance based on gas concentration.
Outputs:
- Analog Output (A0) – Gas concentration level
- Digital Output (D0) – High/Low signal based on threshold (adjustable via potentiometer)

🔌Connection:

MQ Gas Sensor Module
Arduino Board
Jumper Wires

Sensor Pin	Arduino Pin
VCC	5V
GND	GND
A0	A0
D0	D2 (optional)

🔌 Circuit Diagram:

📝 Sample Arduino Code:

int led = 13; // LED connected to pin 13
int gasPin = A0; // Gas sensor analog output connected to A0

void setup() {
Serial.begin(9600); // Initialize Serial Monitor
pinMode(led, OUTPUT); // Set LED pin as output
pinMode(gasPin, INPUT); // Set gas sensor pin as input
}

void loop() {
int gasStatus = analogRead(gasPin); // Read analog value from gas sensor

if (gasStatus <= 500) {
digitalWrite(led, HIGH); // Turn ON LED
Serial.println(“Gas detected – LED ON”);
} else {
digitalWrite(led, LOW); // Turn OFF LED
Serial.println(“No gas detected – LED OFF”);
}

delay(500); // Wait for half a second
}

✅ Applications:

Gas leak detection in homes/kitchens
Industrial safety systems
Smart air quality monitors
Smoke detectors

📞 For More Details & Project Support:

📍 Location:
10A/3, Radhakrishnan Colony,
Sasthri Road, Tennur,
Tiruchirappalli, Tamil Nadu – 620017

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📧 Email:

contact@powerintegrated.in
powerintegratedsolutions@gmail.com

📱 Phone / WhatsApp:
+91 76393 85448
+91 82488 85959

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