String data = "";
void setup() {
  // put your setup code here, to run once:
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  Serial.begin(9600);
  Serial.println("Control LED Menggunakan Serial Monitor");
  Serial.println("By: Farras Shaabihah");
  Serial.println("Silahkan Ketik: [nyala] untuk menjalankan program");
}

void loop() {
  // put your main code here, to run repeatedly:
  if(Serial.available()){
    data = Serial.readStringUntil('\n');
    Serial.println(data);
  }
  if(data == "nyala"){
    digitalWrite(10, HIGH);
    delay(200);
    digitalWrite(10, LOW);
    delay(200);
    digitalWrite(9, HIGH);
    delay(200);
    digitalWrite(9, LOW);
    delay(200);
    digitalWrite(8, HIGH);
    delay(200);
    digitalWrite(8, LOW);
    delay(200);
  }
  data = "";
}