#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,18,2);
int on1=3;
int off1=4;
int led1=2;
int x;
bool bandera;
int bocina=8;
void setup()
{
  pinMode(led1, OUTPUT);
  pinMode(off1,INPUT);
  pinMode(on1, INPUT);
  pinMode(bocina,OUTPUT);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.print("MARCO ANTONIO MELCHOR");
  lcd.setCursor(1,1);
  lcd.print("TORRES GUZMAN");
  delay(1000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("ALARMA APAGADA");
  
}
void loop()
 {
  if (digitalRead(on1)==HIGH or bandera== true)
  {
  digitalWrite(led1, HIGH);
  digitalWrite(bocina, HIGH);
  bandera=true;
  lcd.setCursor(0,0);
  lcd.print("ALARMA ENCENDIDA");
  
  }
  if (digitalRead(off1)==HIGH)
  {
	bandera=false;
    digitalWrite(led1,LOW);
    digitalWrite(bocina, LOW);
      lcd.setCursor(0,0);
      lcd.print("ALARMA APAGADA");
  }
}