/*Write a program to interface any analog (pollution) sensor and 
display the values read on Serial monitor. */
int sensorValue;
int digitalValue;
void setup() {
  Serial.begin(9600);
  pinMode(13, OUTPUT);
  pinMode(3, INPUT);
}

void loop() {
 sensorValue=analogRead(0);
 digitalValue=digitalRead(2);
 if (sensorValue>400)
 {
  digitalWrite(13, HIGH);

 }
 else
 

 {
  digitalWrite(13, LOW);
  Serial.println(sensorValue,DEC);
  Serial.println(digitalValue,DEC);
  delay(1000);

 }
}