#include <LiquidCrystal.h>
#define p1 1
#define p2 2
#define p3 3

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

void setup() {
  lcd.begin(16, 2);
  lcd.print("evaluacion");
  pinMode(p2, INPUT_PULLUP);
  pinMode(p1, OUTPUT);
  pinMode(p3, OUTPUT);
}

void loop() {
  if (digitalRead(p2) == HIGH) {
    lcd.setCursor(0, 1);
    lcd.print("encendido");
    tone(p1, 294, 125);
    digitalWrite(p3, HIGH);
    delay(300);
    digitalWrite(p3, LOW);
    delay(300);
  } else {
    lcd.setCursor(0, 1);
    lcd.print("          ");
    tone(p1, 294, 100);
    delay(300);
    digitalWrite(p3, LOW);
    delay(300);
  }
}