#include <Wire.h>  
#include <LiquidCrystal_I2C.h>  

LiquidCrystal_I2C lcd(0x27, 20, 4);

const int LED1 = 1;
const int LED2 = 2;
const int LED3 = 3;
int buttonPin1 = 9;
int buttonPin2 = 10;
int buttonPin3 = 11;
int statusPB1 = 0;
int statusPB2 = 0;
int statusPB3 = 0;

void setup() {
  pinMode(LED1, OUTPUT); 
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(buttonPin1, INPUT);
  pinMode(buttonPin2, INPUT);
  pinMode(buttonPin3, INPUT);
  lcd.init(); 
  lcd.backlight(); 
  
}

void loop() {
  statusPB1 = digitalRead(buttonPin1);
  statusPB2 = digitalRead(buttonPin2);
  statusPB3 = digitalRead(buttonPin3);
  
 
  
  if(statusPB1 == 1){
    digitalWrite(LED1, HIGH);
    digitalWrite(LED2, LOW);
    digitalWrite(LED3, LOW);
    lcd.setCursor(0,0);
    lcd.print("LED MERAH ON ");
  } else {
    digitalWrite(LED1, LOW);
    digitalWrite(LED2, LOW);
    digitalWrite(LED3, LOW);
    lcd.setCursor(0, 0);
    lcd.print("LED MERAH OFF ");
  }

  if(statusPB2 == 1){
    digitalWrite(LED1, LOW);
    digitalWrite(LED2, HIGH);
    digitalWrite(LED3, LOW);
    lcd.setCursor(0, 1);
    lcd.print("LED HIJAU ON ");
  } else {
    digitalWrite(LED1, LOW);
    digitalWrite(LED2, LOW);
    digitalWrite(LED3, LOW);
    lcd.setCursor(0, 1);
    lcd.print("LED HIJAU OFF ");
  }

  if(statusPB3 == 1){
   digitalWrite(LED1, LOW);
   digitalWrite(LED2, LOW);
   digitalWrite(LED3, HIGH);
    lcd.setCursor(0, 2);
    lcd.print("LED KUNING ON ");
  } else {
    digitalWrite(LED1, LOW);
    digitalWrite(LED1, LOW);
    digitalWrite(LED3, LOW);
    lcd.setCursor(0, 2);
    lcd.print("LED KUNING OFF ");
  }
  
  delay(500);
}