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int led_pin = 13 ;// initializing the pin 9 as the led pin

int flame_sensor_pin = 8 ;// initializing pin 12 as the sensor output pin

int flame_pin = HIGH ; // state of sensor

void setup ( ) {

pinMode ( led_pin , OUTPUT ); // declaring led pin as output pin

pinMode ( flame_sensor_pin , INPUT ); // declaring sensor pin as input pin for Arduino

Serial.begin ( 9600 );// setting baud rate at 9600

}

void loop ( ) {

flame_pin = digitalRead ( flame_sensor_pin ) ; // reading from the sensor

if (flame_pin == LOW ) // applying condition

{

Serial.println ( " FLAME , FLAME , FLAME " ) ;

digitalWrite ( led_pin , HIGH ) ;// if state is high, then turn high the led

}

else

{

Serial.println ( " no flame " ) ;

digitalWrite ( led_pin , LOW ) ; // otherwise turn it low

}

}