#include <Servo.h> // servo library
Servo myservo; // servo variable

int pos = 0; // declaration vor angle 0
int ldr = 3; // analog pin 3
int nilai ;

void setup()
{
  myservo.attach(12); //servo pin
  pinMode(ldr,INPUT);
  Serial.begin(9600);
}

void loop()
{
  nilai=analogRead(ldr);
  Serial.print("LDR value :");
  Serial.print(nilai);
  if (nilai<300){  //decision for Night and Day
    myservo.write(90);
     Serial.println("--> Night");
  }
  else {
    myservo.write(0);
    Serial.println("--> Day");
  }
}