from machine import Pin
from utime import sleep
led=Pin(4,Pin.OUT)
dot=0.25
dash=1
gap=0.5
while True:
    for i in range(0,3):
        led.value(1)
        sleep(dot)
        led.value(0)
        sleep(dot)
    sleep(gap)
    for i in range(0,3):
        led.value(1)
        sleep(dash)
        led.value(0)
        sleep(dash)
    sleep(gap)
    for i in range(0,3):
        led.value(1)
        sleep(dot)
        led.value(0)
        sleep(dot)
       # sleep(gap)
    sleep(2)