from machine import Pin
from utime import sleep

led1 = Pin(15, Pin.OUT)

dot = 0.25
dash = 1
gap = 0.2
gap_l = 0.5
gap_w = 2

def blink_dot():
    led1.value(1)
    sleep(dot)
    led1.value(0)
    sleep(gap)

def blink_dash():
    led1.value(1)
    sleep(dash)
    led1.value(0)
    sleep(gap)

while True:
    #I
    blink_dot()
    blink_dot()
    sleep(gap_l)
    #T
    blink_dash()
    sleep(gap_l)
    #E
    blink_dot()
    sleep(gap_l)
    #R
    blink_dot()
    blink_dash()
    blink_dot()
    sleep(gap_l)