int led = 9;
int potPin = A0;
int val = 0; // inisiasi variable val dengan nilai 0

void setup() {
  Serial.begin(9600);
  pinMode(led, OUTPUT);
}

void loop() {
  val = analogRead(potPin);
  digitalWrite(led, HIGH);
  delay(val);
  digitalWrite(led, LOW);
  delay(val);
  Serial.println("Hello World!");
  delay(1000);
  // Serial.print("Hambatan : ");
  // Serial.println(analogRead(A0));
}