void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
pinMode(2,OUTPUT );
pinMode(3,OUTPUT );
pinMode(4,OUTPUT );
Serial.println("Hallo Mikrokontroler");
}

void loop() {
  // put your main code here, to run repeatedly:
if(Serial.available())
{
  String perintah = Serial.readStringUntil('\n');
  if (perintah == "on1")
  {
    digitalWrite(2,HIGH);
    Serial.println("lampu menyala");
  }
   if (perintah == "off1")
  {
    digitalWrite(2,LOW);
    Serial.println("Lampu Mati");
  }
    if (perintah == "on2")
  {
    digitalWrite(3,HIGH);
    Serial.println("lampu menyala");
  }
  else if (perintah == "off2")
  {
    digitalWrite(3,LOW);
    Serial.println("Lampu Mati");
  }
    if (perintah == "on3")
  {
    digitalWrite(4,HIGH);
    Serial.println("lampu menyala");
  }
  else if (perintah == "off3")
  {
    digitalWrite(4,LOW);
    Serial.println("Lampu Mati");
  }
  else if (perintah == "kedip")
  {
    digitalWrite(2,LOW);
    delay(100);
    digitalWrite(2,HIGH);
    delay(100);
    digitalWrite(3,LOW);
    delay(100);
    digitalWrite(3,HIGH);
    delay(100);
    digitalWrite(4,LOW);
    delay(100);
    digitalWrite(4,HIGH);
    delay(100);
    Serial.println("Lampu Mati");
  }
  
  else if (perintah == "mati")
  {
    digitalWrite(4,LOW);
    digitalWrite(3,LOW);
    digitalWrite(2,LOW);
    Serial.println("Lampu Mati");
  }
}
}