#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd (0x27,16,2);
#define led1 0
#define led2 1
#define led3 2
#define Pulsador1 3
int encender_apagar=0;

void setup() {
  lcd.begin(16,2);
  lcd.backlight ();
  lcd.clear ();
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(Pulsador1, INPUT);
}

void loop() {
encender_apagar=digitalRead(Pulsador1);
if (encender_apagar==HIGH){
  digitalWrite(led1, HIGH);
  digitalWrite(led2, LOW);
  digitalWrite(led3, LOW);                               
  lcd.setCursor (0,0);
  lcd.print("Luz verde");
  lcd.setCursor (0,1);
  lcd.print("Encendidada"); 
  delay(30000);
  digitalWrite(led1, LOW);
  digitalWrite(led2, HIGH);
  digitalWrite(led3, LOW);                               
  lcd.setCursor (0,0);
  lcd.print("Luz amarrilla");
  lcd.setCursor (0,1);
  lcd.print("Encendidada");
  delay(5000);
  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
  digitalWrite(led3, HIGH);                               
  lcd.setCursor (0,0);
  lcd.print("Luz roja     ");
  lcd.setCursor (0,1);
  lcd.print("Encendidada");  
  delay(25000);

}
}