# SOS using Morse Code
from machine import Pin
from utime import sleep
 
dot= 0.25
dash= 1.0
gap= 0.5
 
led= Pin(0, Pin.OUT)
 
while True:
  for i in range(3):
    led.value(1)
    sleep(dot)
    led.value(0)
    sleep(dot)
 
  sleep(gap)
 
  for i in range(3):
    led.value(1)
    sleep(dash)
    led.value(0)
    sleep(dash)
 
  sleep(gap)
 
  for i in range(3):
    led.value(1)
    sleep(dot)
    led.value(0)
    sleep(dot)
  sleep(2)