# Experiência Criativa 2 - Prática 1
from machine import Pin
import time

# Configuração do LEDs
led_r = Pin(13, Pin.OUT)
led_y = Pin(12, Pin.OUT)
led_g = Pin(14, Pin.OUT)

traffic_light = [led_g, led_y, led_r]

while True:
    for led in traffic_light:
        led.on()
        time.sleep(3)
        led.off()
        time.sleep(1)