from machine import Pin
from utime import sleep

led1 = Pin(12, Pin.OUT)

def dot():
  led1.toggle()
  sleep(0.25)
  led1.toggle()
  sleep(0.2)

def dash():
  led1.toggle()
  sleep(1)
  led1.toggle()
  sleep(0.2)

while True:
  dot()
  dot()
  dot()
  dash()
  dash()
  dash()
  dot()
  dot()
  dot()
  sleep(2)