void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(33, OUTPUT);
  pinMode(26, OUTPUT);
  pinMode(25, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(0, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(2, LOW);
  delayMicroseconds(2);
  digitalWrite(2, HIGH);
  delayMicroseconds(10);
  digitalWrite(2, LOW);
  int duration = pulseIn(0, HIGH);
  float distance = duration * 0.034 / 2;

  Serial.print("Jarak: ");
  Serial.println(distance);


  if (distance < 100) {
    digitalWrite(33, LOW);
    digitalWrite(26, HIGH);
    digitalWrite(25, HIGH);
  } else if (distance >= 100 && distance <= 200) {
    digitalWrite(33, HIGH);
    digitalWrite(26, LOW);
    digitalWrite(25, HIGH);
  } else if (distance > 200) {
    digitalWrite(33, HIGH);
    digitalWrite(26, HIGH);
    digitalWrite(25, LOW);
  }

  delay(1000); // this speeds up the simulation
}