#include <Servo.h>
#define MAXHOEK 90
#define MINHOEK 0
int LDR = 0;     //analog pin to which LDR is connected, here we set it to 0 so it means A0
int LDRValue = 0;      //that’s a variable to store LDR values
int light_sensitivity = 500;    //This is the approx value of light surrounding your LDR
Servo myservo;
int teller = 0;    //Bezit de waarde 0 als initiële waarde (servo start altijd in dezelfde positie?), is 1 als servo gedraaid is, is 0 als servo terug gedraaid is

void setup(){
    Serial.begin(9600);          //start the serial monitor with 9600 buad
    pinMode(10, OUTPUT);     //we mostly use 13 because there is already a built in yellow LED in arduino which shows output when 13 pin is enabled
    myservo.attach(12);
}

void loop(){
    LDRValue = analogRead(LDR);      //reads the ldr’s value through LDR
    Serial.println(LDRValue);       //prints the LDR values to serial monitor
    delay(500);        //This is the speed by which LDR sends value to arduino
    if (LDRValue < light_sensitivity){
  digitalWrite(13, HIGH);
        //maakt teller oneven als even, maakt teller even als oneven
        teller++;
        //maakt teller 0 als even, 1 als oneven
        teller %= 2;

  if(teller){ //teller=1
    //code om servo te doen draaien in een richting
    myservo.write(MAXHOEK);
    delay(15);
  } else {    //teller=0
    //code om servo terug te doen draaien
    myservo.write(MINHOEK);
    delay(15);
  }
  while(LDRValue < light_sensitivity){
    LDRValue = analogRead(LDR);      //reads the ldr’s value through LDR
    Serial.println(LDRValue);       //prints the LDR values to serial monitor
    delay(500);        //This is the speed by which LDR sends value to arduino
        }
    }
}