1  #define ledPin 2
 2  #define sensorAnalogPin 14
 3  
 4  int sensorValueAnalog;
 5  
 6  void setup() {
 7    Serial.begin(9600);
 8    pinMode(ledPin, OUTPUT);
 9  }
10  
11  void loop() {
12    sensorValueAnalog = analogRead(sensorAnalogPin);
13  
14    if(sensorValueAnalog > 570) {
15        digitalWrite(ledPin, 1);
16    }
17    else {
18      digitalWrite(ledPin, 0);
19    }
20  
21    Serial.print("Gas Sensor Value : "); Serial.println(sensorValueAnalog, DEC);
22  
23    delay(1000);
24  }