/*
Using Light Dependent Resistor <LDR> to turn ON/OFF LED
View activities using Serial Monitor <located at the top right side of your IDE>
 */

// Analog input
const int analogInput = A0;
// Digital LED output pin 9
const int ledGreen = 9;

//Sensor Value
int sensorVal = 0;

 void setup ()  {
   Serial.begin(9600);
   pinMode(ledGreen,OUTPUT);
}

void loop() {
   sensorVal = analogRead(analogInput);

   Serial.print("sensor = ");
   Serial.print(sensorVal);
   Serial.print("; led = ");

   if (sensorVal < 250) {
      Serial.println("is turn ON");
      digitalWrite(ledGreen, HIGH);
   } else {
       Serial.println("is turn OFF");
       digitalWrite(ledGreen, LOW);

   }
   delay(5);
}