#define LM35_PIN 15    // Pin sensor LM35

#define led1 25
#define led2 26
#define led3 27
#define led4 13
#define led5 12
#define led6 14

void setup() {
  Serial.begin(9600);
  
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(led4, OUTPUT);
  pinMode(led5, OUTPUT);
  pinMode(led6, OUTPUT);
}

void loop() {
  int analogValue = analogRead(LM35_PIN);
  float suhu = (analogValue / 4095.0) * 3300; 
  suhu = suhu / 10;                        

  Serial.print("Suhu: ");
  Serial.println(suhu);

  float x = 0.43;

  if (suhu < 27 * x) {
    digitalWrite(led1, HIGH);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, LOW);
    digitalWrite(led4, LOW);
    digitalWrite(led5, LOW);
    digitalWrite(led6, LOW);
  } 
  else if (suhu >= 27 * x && suhu < 29 * x) {
    digitalWrite(led1, HIGH);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, HIGH);
    digitalWrite(led4, LOW);
    digitalWrite(led5, LOW);
    digitalWrite(led6, LOW);
  } 
  else if (suhu >= 29 * x && suhu < 31 * x) {
    digitalWrite(led1, HIGH);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, HIGH);
    digitalWrite(led4, HIGH);
    digitalWrite(led5, LOW);
    digitalWrite(led6, LOW);
  } 
  else if (suhu >= 31 * x) {
    digitalWrite(led1, HIGH);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, HIGH);
    digitalWrite(led4, HIGH);

    digitalWrite(led5, HIGH);
    digitalWrite(led6, HIGH);
    delay(500);
    digitalWrite(led5, LOW);
    digitalWrite(led6, LOW);
    delay(500);
  }

  delay(1000);  
}