#include "IRremote.h"
#include "LiquidCrystal_I2C.h"
#define IR_RECEIVE_PIN 2
#define PIN_RELAY 3
LiquidCrystal_I2C lcd(0x27,16,2);

void setup() {
  lcd.init();
  lcd.backlight();
  IrReceiver.begin(IR_RECEIVE_PIN, ENABLE_LED_FEEDBACK);
  pinMode(PIN_RELAY, OUTPUT);
}

void loop() {
  if (IrReceiver.decode()) {
    int valor = IrReceiver.decodedIRData.command;

    switch(valor){
      case 162:
        digitalWrite(PIN_RELAY, !digitalRead(PIN_RELAY));
        lcd.clear();
        if(digitalRead(PIN_RELAY) == HIGH)
          lcd.print("LIGADO");
        else
          lcd.print("DESLIGADO");
        break;
      default:
        lcd.clear();
        lcd.print("Apenas o POWER!");
        break;
    }

    IrReceiver.resume();
  }
}