Smart fire alarm system

Arduino IDE

flame sensor

5 mm LED: Green

LED, Blue

Jumper wires (generic)

5 mm LED: Red

Arduino UNO

Breadboard (generic)

<pre ><code >#define FLAME 3 // connect DO pin of sensor to this pin const int led1 = 10; const int led2 =9; const int led3 = 8; const int led4 =7; int buzzer = 13; void setup() { Serial.begin(9600); pinMode(FLAME, INPUT);//define FLAME input pin pinMode(buzzer, OUTPUT);//define ALARM output pin pinMode(led1,OUTPUT); pinMode(led2,OUTPUT); pinMode(led3,OUTPUT); pinMode(led4,OUTPUT); } void loop() { int fire = digitalRead(FLAME);// read FLAME sensor if( fire == HIGH) { digitalWrite(buzzer,HIGH); digitalWrite(led1,HIGH); digitalWrite(led2,HIGH); digitalWrite(led3,LOW); digitalWrite(led4,LOW);// set the buzzer ON Serial.println("Fire"); }else{ digitalWrite(buzzer,LOW); digitalWrite(led3,HIGH); digitalWrite(led4,HIGH); digitalWrite(led1,LOW); digitalWrite(led2,LOW); // Set the buzzer OFF Serial.println("no fire"); } delay(200); } </code></pre>

diagram for code

Smart fire alarm system

Fire alarm system