#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);
int LEDrojo = 8;
int LEDamarillo =  3;
int LEDverde = 1;

void setup() {
lcd.init();
lcd.backlight();

pinMode(LEDrojo, OUTPUT);
pinMode(LEDamarillo, OUTPUT);
pinMode(LEDverde, OUTPUT);
}
void loop(){
lcd.clear();
lcd. setCursor(0,0);
lcd.print("carrera 1");
delay(1000);

lcd.clear();
digitalWrite(LEDrojo, HIGH);
digitalWrite(LEDamarillo, LOW);
digitalWrite(LEDverde, LOW);
lcd.setCursor(0,1);
lcd.print("En sus marcas");
delay(1000);

lcd.clear();
digitalWrite(LEDrojo, LOW);
digitalWrite(LEDamarillo, HIGH);
digitalWrite(LEDverde, LOW);
lcd.setCursor(0,1);
lcd.print("LISTOS");
delay(1000);

lcd.clear();
digitalWrite(LEDrojo, LOW);
digitalWrite(LEDamarillo, LOW);
digitalWrite(LEDverde, HIGH);
lcd.setCursor(0,1);
lcd.print("FUERA");
delay(1000);
}