#define ledk 9
#define ldr A5
#define ledm 10
#define ledh 11
#define buzer 6
int nilai;

void setup() {
  Serial.begin(9600);
  pinMode(ledm, OUTPUT);
  pinMode(ledk, OUTPUT);
  pinMode(ledh, OUTPUT);
  pinMode(buzer, OUTPUT);


}

void loop() {
  // put your main code here, to run repeatedly:
  nilai = analogRead(ldr);
  Serial.print("nilai LDR : ");
  Serial.println(nilai);

  if(nilai > 500){
    digitalWrite(ledm, HIGH);
    digitalWrite(ledh, LOW);
    digitalWrite(ledk, LOW);
    digitalWrite (buzer, HIGH);
    tone(buzer, 1000);
    Serial.println("keadaan gelap, lampu menyala");
  }else{
    digitalWrite(ledm, LOW);
    digitalWrite(ledk, HIGH);
    digitalWrite(ledh, HIGH);
    digitalWrite(buzer, LOW);
    Serial.println("Keadaan terang, lampu mati");
  }
  delay(1000);
}