#include <LiquidCrystal_I2C.h>
#include <Wire.h>
LiquidCrystal_I2C lcd (0x3F,16,2);
void setup()
{
 
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  Wire.begin(1);
  Wire.onReceive(evento);
  Serial.begin(9600);
}

void loop()
{
  delay(300);
}
void evento(int num){
  int pinOut = 0;
  int estado = 0;
  if(Wire.available() == 2){
    pinOut = Wire.read();
     lcd.init();
  lcd.clear();         
  lcd.backlight(); 
    lcd.setCursor(2,0); 
    lcd.print("LED");
    lcd.setCursor(2,1); 
    lcd.print(pinOut);
  }
  if(Wire.available() == 1){
    estado = Wire.read();
     lcd.init();
    lcd.clear();         
     lcd.backlight(); 
    lcd.setCursor(2,0); 
    lcd.print("Estado");
    lcd.setCursor(2,1); 
    lcd.print(estado);
  }
  digitalWrite(pinOut,estado);
}