from machine import Pin
import time

led_pin = Pin(5, Pin.OUT)

def dot():
    led_pin.value(1)
    time.sleep(0.1)
    led_pin.value(0)
    time.sleep(0.1)

def dash():
    led_pin.value(1)
    time.sleep(0.3)
    led_pin.value(0)
    time.sleep(0.1)

dot()
dash()