#include <LiquidCrystal_I2C.h>

int led1 = 2;
int led2 = 3; 
int led3 = 4; 
int button1 = 5;
int button2 = 6;
int button3 = 7;

LiquidCrystal_I2C lcd (0x27, 20, 4);

void setup() {
  lcd.init();
  lcd.clear();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("PROGRAM MULAI");
  delay (1000);
  lcd.clear();
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(button1, INPUT);
  pinMode(button2, INPUT);
  pinMode(button3, INPUT);
}

void loop() {
  if (digitalRead(button1) == HIGH) {
    digitalWrite(led1, HIGH);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
    delay(500);
    lcd.setCursor(0,0);
  lcd.print("LED MERAH ON ");
  delay(500);
  lcd.setCursor(0,1);
  lcd.print("LED HIJAU OFF");
  delay(500);
  lcd.setCursor(0,2);
  lcd.print("LED KUNING OFF");
  delay(500);
  
  }
  else if (digitalRead(button2) == HIGH) {
    digitalWrite(led1, LOW);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, LOW);
    delay(500);
    lcd.setCursor(0,0);
  lcd.print("LED MERAH OFF");
  delay(500);
  lcd.setCursor(0,1);
  lcd.print("LED HIJAU ON ");
  delay(500);
  lcd.setCursor(0,2);
  lcd.print("LED KUNING OFF");
  delay(500);
  }
  else if (digitalRead(button3) == HIGH) {
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
    digitalWrite(led3, HIGH);
    delay(500);
    lcd.setCursor(0,0);
  lcd.print("LED MERAH OFF");
  delay(500);
    lcd.setCursor(0,1);
  lcd.print("LED HIJAU OFF");
  delay(500);
  lcd.setCursor(0,2);
  lcd.print("LED KUNING ON ");
  delay(500);
  }
}