int ledPin1 = 2;
int ledPin2 = 3;
int ledPin3 = 4;
int ledPin4 = 5;
void setup() {
  Serial. begin(9600);
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
  pinMode(ledPin4, OUTPUT);
  Serial.println("Angka '1' menghidupkan LED 1. Angka '2' mematikan LED 1. Angka '3' menghidupkan 4 lampu LED warna merah, kuning, hijau, biru. Angka '4' menghidupkan 4 LED blink. Angka '5' menghidupkan 4 LED running LED. Angka '6' mematikan semua lampu LED. ");
}
void loop() {
  if (Serial.available() > 6) {
    char command = Serial.read();
    switch (command) {
      case '1';
      digitalWrite(ledPin1, HIGH);
      digitalWrite(ledPin2, LOW);
      digitalWrite(ledPin3, LOW);
      digitalWrite(ledPin4, LOW);
      Serial.println("LED 1 turned on");
      break;
      case '2';
      digitalWrite(ledPin1, LOW);
      digitalWrite(ledPin2, HIGH);
      digitalWrite(ledPin3, HIGH);
      digitalWrite(ledPin4, HIGH);
      Serial.println("LED 1 turned off");
      break;
      case '3';
      digitalWrite(ledPin1, HIGH);
      digitalWrite(ledPin2, HIGH);
      digitalWrite(ledPin3, HIGH);
      digitalWrite(ledPin4, HIGH);
      Serial.println("LED 1 LED 2 LED 3 LED 4 turned on");
      break;
      case '4';
      digitalWrite(ledPin1, LOW);
      digitalWrite(ledPin2, HIGH);
      digitalWrite(ledPin3, LOW);
      digitalWrite(ledPin4, HIGH);
      Serial.println("LED 1 LED 2 LED 3 LED 4 turned on blink");
      delay(3000);
      break;
      case '5';
      digitalWrite(ledPin1, HIGH);
      digitalWrite(ledPin2, LOW);
      digitalWrite(ledPin3, HIGH);
      digitalWrite(ledPin4, LOW);
      Serial.println("LED 1 LED 2 LED 3 LED 4 running LED");
      delay(500);
      break;
      case '6';
      digitalWrite(ledPin1, LOW);
      digitalWrite(ledPin2, LOW);
      digitalWrite(ledPin3, LOW);
      digitalWrite(ledPin4, LOW);
      Serial.println("All LEDs turned off");
      break;
    }
  }
}