const int ldrPin = 34;
const int ledDark = 18;
const int ledBright = 19;

int threshold = 500;

void setup() {
  pinMode(ledDark, OUTPUT);
  pinMode(ledBright, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  int ldrValue = analogRead(ldrPin);
  Serial.println(ldrValue);

  if (ldrValue < threshold) {
    digitalWrite(ledDark, HIGH);
    digitalWrite(ledBright, LOW);
  } else {
    digitalWrite(ledDark, LOW);
    digitalWrite(ledBright, HIGH);
  }

  delay(200);
}