# from machine import Pin,Timer
# from utime import sleep
# import time

# led1 = Pin(0,Pin.OUT)
# led2 = Pin(1,Pin.OUT)
# led3= Pin(2,Pin.OUT)
# led4 = Pin(3,Pin.OUT)
# led0 = Pin(4,Pin.OUT)
# led5 = Pin(5,Pin.OUT)
# led6= Pin(6,Pin.OUT)
# led7 = Pin(7,Pin.OUT)


# count = 0
# start = time.time()
# while True:
#     sleep(0.5)
#     count = count + 1
#     if (count % 2) > 0:
#         led4.on()
#     else:
#         led4.off()
#     if (count % 4) > 1:
#         led3.on()
#     else:
#         led3.off()
#     if (count % 8) > 3:
#         led2.on()
#     else:
#         led2.off()
#     if (count % 16) > 7:
#         led1.on()
#     else:
#         led1.off()
#     if (count % 32) > 15:
#         led0.on()
#     else:
#         led0.off()
#     if (count % 64) > 31:
#         led5.on()
#     else:
#         led5.off()
#     if (count % 128) > 63:
#         led6.on()
#     else:
#         led6.off()
#     if (count % 256) > 127:
#         led7.on()
#     else:
#         led7.off()
#     sleep(0.5)
#     if count == 256:
#         break

# end = time.time()
# print("time taken:", end - start)


import machine
import utime
import random

led_pins = [3,2,1,0,4,5,6,7]

leds = [machine.Pin(pin, machine.Pin.OUT) for pin in led_pins]


for decimal in range(256):
    binary = bin(decimal)[2:]
    binary = '0'*(8-len(binary)) + binary
    print(binary)
    for i, pin in enumerate(leds):
        pin.value(int(binary[i])) 
    utime.sleep(0.25)