const int LDR_PIN = 15;

const int minimum_sunlight = 172; //~8600 lux

void setup() {
  Serial.begin(115200);
  pinMode(LDR_PIN, INPUT);
}

void loop() {
  Serial.println();
  Serial.println("-----");
  int reading = analogRead(LDR_PIN);
  Serial.println(reading);
  Serial.print("Room: ");
  if (analogRead(LDR_PIN) < 3860) {
    Serial.print("Light!");
  } else {
    Serial.print("Dark  ");
  }
  delay(100);
}