#define DARK HIGH
#define LIGHT LOW

const int LDR_PIN = 16;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(LDR_PIN, INPUT);
}

void loop() {
  int lightState = digitalRead(LDR_PIN);
  if (lightState == DARK) {
    Serial.println("Dark!");
  }else {
    Serial.println("Light!");
  }
  // put your main code here, to run repeatedly:
  delay(500); // this speeds up the simulation
}