Arduino Code For Fire Detector Alarm

 #include <LiquidCrystal.h>

LiquidCrystal lcd(2, 3, 4, 5, 6, 7);

int sensorPin = A0; // choose the input pin (for Fire sensor)  

int buzzer = 13; // choose the pin for the Buzzer

int G_led = A5; // choose the pin for the Green LED

int R_led = A4; // choose the pin for the Red Led

int read_value; // variable for reading the sensorpin status

void setup(){ 

pinMode(sensorPin, INPUT); // declare sensor as input

pinMode(buzzer,OUTPUT); // declare Buzzer as output 

pinMode(R_led,OUTPUT); // declare Red LED as output

pinMode(G_led,OUTPUT); // declare Green LED as output

lcd.begin(16, 2);

lcd.clear();

lcd.setCursor(0,0);

lcd.print(" Made By Sufian ");

lcd.setCursor(0,1);

lcd.print("  Fire Detector ");

delay(2000);

lcd.clear();

}

void loop(){

read_value = digitalRead(sensorPin); // Digital input value

if(read_value==1){ // check if the Fire variable is High

lcd.setCursor(0, 0);

lcd.print("   No Fire      ");   

lcd.setCursor(0, 1);

lcd.print(".....Normal.....");   

digitalWrite(buzzer, LOW); // Turn LED off.  

digitalWrite(R_led, LOW);  // Turn LED off.

digitalWrite(G_led, HIGH); // Turn LED on.

}

else{ // check if the Fire variable is Low

lcd.setCursor(0, 0);

lcd.print("Fire is Detected");  

lcd.setCursor(0, 1);

lcd.print("Alert....!!!    ");

    

digitalWrite(buzzer, HIGH); // Turn LED on.  

digitalWrite(R_led, HIGH);  // Turn LED on.

digitalWrite(G_led, LOW);   // Turn LED off.

delay(1000);

}

delay(100);

}