#include <Servo.h>

const int tempPin = A0;        // Pin sensor suhu LM35
const int motorPin = 9;        // Pin PWM untuk motor kipas
const int servoPin = 10;       // Pin untuk motor servo
const int motorDir1 = 2;       // Pin arah motor driver 1
const int motorDir2 = 3;       // Pin arah motor driver 2

Servo myservo;                // Objek servo

void setup() {
  pinMode(tempPin, INPUT);
  pinMode(motorPin, OUTPUT);
  pinMode(motorDir1, OUTPUT);
  pinMode(motorDir2, OUTPUT);

  myservo.attach(servoPin);
  myservo.write(90); // Mulai dari posisi tengah
  Serial.begin(9600);
}

void loop() {
  int tempValue = analogRead(tempPin);
  float voltage = tempValue * (5.0 / 1023.0);
  float temperature = voltage * 100; // LM35 memberikan 10mV per derajat Celcius

  int pwmSpeed = map(temperature, 20, 40, 0, 255);
  pwmSpeed = constrain(pwmSpeed, 0, 255);

  analogWrite(motorPin, pwmSpeed);

  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.print(" C, ");
  Serial.print("PWM Speed: ");
  Serial.println(pwmSpeed);

  if (temperature > 30) {
    digitalWrite(motorDir1, HIGH);
    digitalWrite(motorDir2, LOW);
  } else {
    digitalWrite(motorDir1, LOW);
    digitalWrite(motorDir2, HIGH);
  }

  for (int pos = 0; pos <= 180; pos += 1) {
    myservo.write(pos);
    delay(15);
  }
  for (int pos = 180; pos >= 0; pos -= 1) {
    myservo.write(pos);
    delay(15);
  }

  delay(1000);
}