Fire-Alarm

A cost-effective and reliable fire detection system built with Arduino, IR flame sensor, and buzzer. This project monitors fire hazards and triggers real-time alerts via a buzzer when fire is detected. Designed for easy deployment in residential or commercial environments, this solution emphasizes early detection, safety, and rapid response.

Fire Detection System Using Arduino

A cost-effective, efficient, and user-friendly fire detection system developed using Arduino, IR flame sensor, and a buzzer. Designed for early fire hazard detection, the system alerts users in real-time, ensuring quick response and improved safety in both residential and commercial spaces.

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Features

• 🔍 Real-time fire detection using IR flame sensor
• 🔔 Immediate alert via buzzer
• 🧠 Simple logic and efficient design
• 🧩 Easy to install and scalable
• 💡 Ideal for homes, offices, and small industries

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🔧 Components Used

• Arduino UNO (or compatible board)
• IR Flame Sensor
• Buzzer
• Jumper wires
• Breadboard (optional)
• 5V regulated power supply

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🔌 Circuit Connection

Component	Arduino Pin
IR Flame Sensor VCC	5V
IR Flame Sensor GND	GND
IR Flame Sensor DO	D8
Buzzer +	D9
Buzzer –	GND

Ensure all components share a common GND.

Diagram

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🧾 Arduino Code

const int buzzerPin = 9;
const int fireSensorPin = 8;

void setup()
{
  Serial.begin(9600);
  pinMode(buzzerPin, OUTPUT);
  pinMode(fireSensorPin, INPUT);
  Serial.println("System initialized. Monitoring for fire...");
}

void loop()
{
  int fireValue = digitalRead(fireSensorPin);
  
  Serial.print("Fire sensor value: ");
  Serial.println(fireValue);

  if(fireValue == 0)
  {
    Serial.println("Fire detected! Activating buzzer...");
    digitalWrite(buzzerPin, HIGH);
    delay(5000);
  }
  else
  {
    Serial.println("No fire detected.");
    digitalWrite(buzzerPin, LOW);
  }

  delay(500);
}

Circuit in Action