const int ldrPin = 12;
const int led1Pin = 15;
const int led2Pin = 2;
const int buzzerPin = 4;

void setup() {
  Serial.begin(115200);
  pinMode(ldrPin, INPUT);
  pinMode(led1Pin, OUTPUT);
  pinMode(led2Pin, OUTPUT);
  pinMode(buzzerPin, OUTPUT);
}

void loop() {
  int ldrValue = analogRead(ldrPin);

  if (ldrValue <= 1970) {
    digitalWrite(led1Pin, HIGH);
  } else {
    digitalWrite(led1Pin, LOW);
  }

  if (ldrValue <= 3000) {
    digitalWrite(led2Pin, HIGH);
  } else {
    digitalWrite(led2Pin, LOW);
  }

  if (ldrValue <= 1000) {
    digitalWrite(buzzerPin, HIGH);
  } else {
    digitalWrite(buzzerPin, LOW);
  }

  delay(1000);
}