#include <LiquidCrystal_I2C.h>
int buttonPin = 13;  
int RED = 2;     
int YELLOW = 3;
int GREEN = 4;

int buttonState = 0;
LiquidCrystal_I2C lcd(0x27, 16, 2);  

void setup() {
  lcd.init();
  lcd.backlight();
  pinMode(RED, OUTPUT);
  pinMode(YELLOW, OUTPUT);
  pinMode(GREEN, OUTPUT);
  pinMode(buttonPin, INPUT);
}

void loop() {
  buttonState = digitalRead(buttonPin);

  if (buttonState == HIGH) {
    // LED DAN LCD ON:
    digitalWrite(RED, HIGH);
    delay(500);
    digitalWrite(YELLOW, HIGH);
    delay(500);
    digitalWrite(GREEN, HIGH);
    
      lcd.clear();                  
      lcd.setCursor(3, 0);          
      lcd.print("Muhamad Ariel");        
      lcd.setCursor(3, 1);          
      lcd.print("XII ROBOTIK"); 
      delay(100);
    
  } else {
    // LED DAN LCD OFF:
    digitalWrite(RED, LOW);
    delay(500);
    digitalWrite(YELLOW, LOW);
    delay(500);
    digitalWrite(GREEN, LOW);

    lcd.clear();
    delay(100);
        
  }
}