int sensorPin = A0;
int sensorValue=0;
int led=3;
void setup()
{
  pinMode(led,OUTPUT);
  Serial.begin(9600);
}
void loop()
{
  Serial.println("Sensor Reading");
  sensorValue= analogRead(sensorPin);
  Serial.println(sensorValue);
  if(sensorValue < 100);
  {
    Serial.println("LED light on");
    digitalWrite(led,HIGH);
    delay(1000);
  }
  digitalWrite(led,LOW);
  delay(sensorValue);
}