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

LiquidCrystal_I2C lcd(0x27, 16, 2);

const int buttonPin = 7;
bool isDisplayingHello = false;
unsigned long lastButtonPressTime = 0;
unsigned long displayChangeTime = 0;

void setup() {
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Esperando");
  pinMode(buttonPin, INPUT);
}

void loop() {
  unsigned long currentTime = millis();
  int buttonState = digitalRead(buttonPin);

  if (buttonState == HIGH && !isDisplayingHello) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Hola Mundo");
    isDisplayingHello = true;
    lastButtonPressTime = currentTime;
  }

  if (isDisplayingHello && currentTime - lastButtonPressTime >= 2000) {
    if (currentTime - displayChangeTime >= 2000) {
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("Esperando");
      isDisplayingHello = false;
      displayChangeTime = currentTime;
    }
  }
}