from machine import Pin, Timer
from time import sleep

led = Pin(2, Pin.OUT)

def pisca (t):
    global led
    led.value(not led.value())
    
tim = Timer(0)
tim.init(freq=60,
         mode=Timer.PERIODIC,
         callback=pisca)
    
i = 0    
while True:
    print (f'Momento: {i}')
    sleep(2)
    i = i + 1