from machine import Pin
from utime import sleep

Dot=0.25
Dash=1.0
Gap=0.2
ON=1
OFF=0
LED=Pin(0,Pin.OUT)
while True:
  for i in range(0,3):
    LED.value(ON)
    sleep(Dot)
    LED.value(OFF)
    sleep(Gap)
  sleep(0.5)
  for i in range(0,3):
    LED.value(ON)
    sleep(Dash)
    LED.value(OFF)
    sleep(Gap)
  sleep(2)