from machine import Pin
from utime import sleep

LED0 = Pin(0, Pin.OUT)
LED1 = Pin(1, Pin.OUT)
LED2 = Pin(2, Pin.OUT)
LED3 = Pin(3, Pin.OUT)
LED4 = Pin(4, Pin.OUT)
LED5 = Pin(5, Pin.OUT)
LED6 = Pin(6, Pin.OUT)
LED7 = Pin(7, Pin.OUT)


def binarytoLED(binary):
    LED0.value(int(binary[-1]))
    LED1.value(int(binary[-2]))
    LED2.value(int(binary[-3]))
    LED3.value(int(binary[-4]))
    LED4.value(int(binary[-5]))
    LED5.value(int(binary[-6]))
    LED6.value(int(binary[-7]))
    LED7.value(int(binary[-8]))
    
counter = 0
while counter < 255:
    binary = bin(counter)[2:]
    while len(binary) < 8:
        binary = '0' + binary
    binarytoLED(binary)
    sleep(1)
    counter += 1

LED0.value(False)
LED1.value(False)
LED2.value(False)
LED3.value(False)
LED4.value(False)
LED5.value(False)
LED6.value(False)
LED7.value(False)