import time
import machine
led_rood = machine.Pin(0,machine.Pin.OUT)
led_oranje = machine.Pin(1,machine.Pin.OUT)
led_geel = machine.Pin(3,machine.Pin.OUT)
led_groen = machine.Pin(2,machine.Pin.OUT)

while True:
    led_groen.value(0)
    led_rood.value(1) #zet de rode led aan
    time.sleep(0.25)
    led_rood.value(0)
    led_oranje.value(1)
    time.sleep(0.25)
    led_oranje.value(0)
    led_geel.value(1)
    time.sleep(0.25)
    led_groen.value(1)
    led_geel.value(0)
    time.sleep(0.25)