#define ldr A0
#define led 6

void setup() {

  pinMode(ldr, INPUT);
  pinMode(led, OUTPUT);

  Serial.begin(9600);
}

void loop() {


  int value = analogRead(ldr);

  Serial.println(value);

  if(value > 300){
    digitalWrite(led, HIGH);
  } else {
    digitalWrite(led, LOW);
  }

  delay(10);
}