#include <Servo.h>

int flame_sensor = 2; // initializing pin 2 as the sensor output pin
int buzzer = 3;// initializing pin 3 as the buzzer output pin
int servoPin = 4; // initializing pin 4 as the servo output pin

int flame_detected; // state of sensor
Servo servol;

void setup()
{
  Serial.begin(9600); // setting baud rate at 9600
  pinMode(buzzer, OUTPUT); // declaring buzzer pin as output pin
  pinMode(flame_sensor, INPUT); // declaring sensor pin as input pin for Arduino
  servol.attach(servoPin);
  servol.write(90);
  delay(500);
}

void loop()
{
  flame_detected = digitalRead(flame_sensor); // reading from the sensor
  
  if (flame_detected == 1) // applying condition
  {
    digitalWrite(buzzer, LOW); // if state is high, then turn high the buzzer
    servol.write(90);
  }
  else
  {
    digitalWrite(buzzer, HIGH); // otherwise turn it low
    servol.write(0);
  }
  
  delay(100);
}