from machine import Pin
from time import sleep
redpin=Pin(2,Pin.OUT)
greenpin=Pin(4,Pin.OUT)
bluepin=Pin(5,Pin.OUT)
while True:
        redpin.value(1)
        greenpin.value(0)
        bluepin.value(0)
        sleep(20)
        redpin.value(1)
        greenpin.value(1)
        bluepin.value(0)
        sleep(5)
        redpin.value(0)
        greenpin.value(1)
        bluepin.value(0)
        sleep(20)