from machine import Pin
p1 = Pin(26, Pin.OUT)
p2 = Pin(27, Pin.OUT)
import time
import buttons
pieru = False
x = .25
while True:
    p1.value(True)
    p2.value(False)
    time.sleep(x)
    p1.value(False)
    p2.value(True)
    time.sleep(x)
    if buttons.value(buttons.BTN_LEFT):
        x = .15
    if buttons.value(buttons.BTN_RIGHT):
        x = .3
    if buttons.value(buttons.BTN_UP):
        pieru = not pieru
    if buttons.value(buttons.BTN_DOWN):
        p1.value(False)
        p2.value(False)
        break