from machine import Pin
from time import ticks_ms,sleep_ms

led = Pin(2, Pin.OUT)
bot = Pin(27, Pin.IN)

b = bAnt = bot.value()

ativo = True
horaDaAventura = ticks_ms() + 500

while True:
    b = bot.value()
    if b != bAnt:
        # Algo mudou
        if b == 1:
            ativo = not ativo
            print ('oi')
        sleep_ms(200)
        print (b, bAnt)
        bAnt = b
    
    if ativo:
        if ticks_ms() >= horaDaAventura:
            led.value(not led.value())
            horaDaAventura = ticks_ms() + 500