#define LIGHT_PIN A0
#define LED_PIN 13

void setup() {
  // put your setup code here, to run once:
  pinMode(LIGHT_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  int lightLevel = analogRead(LIGHT_PIN);
  Serial.printIn

  if(lightLevel > 900)
  {
    digitalWrite(LIGHT_PIN, HIGH);
  }
  else
  {
  digitalWrite(LIGHT_PIN, LOW);
  }
}