from machine  import Pin
from time import sleep

red = Pin(1, Pin.OUT)
green = Pin(6, Pin.OUT)
gelb = Pin (12, Pin.OUT)

while True:
    red.on()
    sleep(2)

    red.off()
    gelb.on()
    sleep(1)

    gelb.off()
    green.on()
    sleep(0.5)

    green.on()
    sleep(2)