from machine import Pin
from utime import sleep
ledy = Pin(1, Pin.OUT)
ledo = Pin(5, Pin.OUT)
ledp = Pin(9, Pin.OUT)
ledb = Pin(13, Pin.OUT)
while True:
ledo.toggle()
ledb.toggle()
sleep(0.5)
ledo.toggle()
ledb.toggle()
ledy.toggle()
ledp.toggle()
sleep(0.5)
ledy.toggle()
ledp.toggle()