int LedGelap = 12;  // Set pin 12 as LED pin 
int LedRedup = 11;  // Set pin 11 as LED pin 
int LedTerang = 10; // Set pin 10 as LED pin  
int Sensor = A0;    // Set pin A0 as Sensor pin  
void setup() {
  Serial.begin(9600);         // initializing serial begin of Arduino Uno
  pinMode(LedTerang, OUTPUT); // Set pin as output LED red
  pinMode(LedRedup, OUTPUT);  // Set pin as output LED yellow
  pinMode(LedGelap, OUTPUT);  // Set pin as output LED Green 
  pinMode(Sensor, INPUT);     // Set pin as input Sensor
}

void loop() {                            // Set the Variable function
  int SensorStatus = analogRead(Sensor); // SensorStatus reading digital data from Sensor

  if(SensorStatus <= 306){                // If the movement on sensor less than 306
    digitalWrite(LedGelap, LOW);          // LED red will turn off 
    digitalWrite(LedRedup, LOW);          // LED yellow will turn off 
    digitalWrite(LedTerang, HIGH);        // LED green will turn off 
    Serial.print("Terang, Led Hidup : "); // Serial will print this
    Serial.println(SensorStatus);         // Serial will reading digital data from SensorStatus
  }
  else if(SensorStatus <= 512){           // If the movement on sensor less than 306
    digitalWrite(LedGelap, LOW);          // LED red will turn off 
    digitalWrite(LedRedup, HIGH);         // LED yellow will turn on 
    digitalWrite(LedTerang, LOW);         // LED green will turn off 
    Serial.print("Redup, Led Hidup : ");  // Serial will print this
    Serial.println(SensorStatus);         // Serial will reading digital data from SensorStatus
  }
  else{
    digitalWrite(LedGelap, HIGH);         // LED red will turn on
    digitalWrite(LedRedup, LOW);          // LED yellow will turn off 
    digitalWrite(LedTerang, LOW);         // LED green will turn off 
    Serial.print("Gelap, Led Hidup : ");  // Serial will print this
    Serial.println(SensorStatus);         // Serial will reading digital data from SensorStatus

  }
}