const int ledPins[] = {9, 10, 11, 12, 13,};

void pattern1() {
  Serial.println("Menu");
  Serial.println("1. Turn ON LED 1");
  Serial.println("2. Turn OFF LED 1");
  Serial.println("3. Turn ON LED 2");
  Serial.println("4. Turn OFF LED 2");
  Serial.println("5. Turn ON LED 3");
  Serial.println("6. Turn OFF LED 3");
  Serial.println("7. Turn ON LED 4");
  Serial.println("8. Turn OFF LED 4");
  Serial.println("9. Turn ON LED 5");
  Serial.println("0. Turn OFF LED 5");
  Serial.println("------------");
}

void setup() {
  for (int i = 0; i < 5; i++) {
    pinMode(ledPins[i], OUTPUT);
  }
  Serial.begin(9600);
  Serial.println("Ready...");
  delay(2000);
  pattern1();
}

void loop() {
  while (Serial.available()) {
    char inchar = (char)Serial.read();
    
    switch (inchar) {
      case '1':
        digitalWrite(ledPins[0], HIGH);
        Serial.println("LED 1 ON");
        break;
      case '2':
        digitalWrite(ledPins[0], LOW);
        Serial.println("LED 1 OFF");
        break;
      case '3':
        digitalWrite(ledPins[1], HIGH);
        Serial.println("LED 2 ON");
        break;
      case '4':
        digitalWrite(ledPins[1], LOW);
        Serial.println("LED 2 OFF");
        break;
      case '5':
        digitalWrite(ledPins[2], HIGH);
        Serial.println("LED 3 ON");
        break;
      case '6':
        digitalWrite(ledPins[2], LOW);
        Serial.println("LED 3 OFF");
        break;
      case '7':
        digitalWrite(ledPins[3], HIGH);
        Serial.println("LED 4 ON");
        break;
      case '8':
        digitalWrite(ledPins[3], LOW);
        Serial.println("LED 4 OFF");
        break;
      case '9':
        digitalWrite(ledPins[4], HIGH);
        Serial.println("LED 5 ON");
        break;
      case '0':
        digitalWrite(ledPins[4], LOW);
        Serial.println("LED 5 OFF");
        break;
      default:
        Serial.println("Invalid input, please try again.");
        break;
    }
  }
}