from machine import Pin
from time import sleep_ms

DIR_PIN = 2
STEP_PIN = 3

dir_pin = Pin(DIR_PIN, Pin.OUT)
step_pin = Pin(STEP_PIN, Pin.OUT)

step_pin.value(0)

while True:

    dir_pin.value(1)
    for i in range(200):
        step_pin.value(1)
        step_pin.value(0)
        sleep_ms(5)  

    sleep_ms(500)

    dir_pin.value(0)
    for i in range(200):
        step_pin.value(1)
        step_pin.value(0)
        sleep_ms(2)   

    sleep_ms(1000)