import machine
import time
from machine import Pin

AN = Pin(5,Pin.OUT)
#A negativo
AP = Pin(17,Pin.OUT)
#A positivo
BP = Pin(16,Pin.OUT)
#B positivo
BN = Pin(4,Pin.OUT)
#B negativo

while True:
    AP.value(1)
    BP.value(0)
    AN.value(0)
    BN.value(0)
    time.sleep_ms(0)

    AP.value(0)
    BP.value(1)
    AN.value(0)
    BN.value(0)
    time.sleep_ms(0)

    AP.value(0)
    BP.value(0)
    AN.value(1)
    BN.value(0)
    time.sleep_ms(0)

    AP.value(0)
    BP.value(0)
    AN.value(0)
    BN.value(1)
    time.sleep_ms(1000)