from machine import Pin
from time import sleep
led1=Pin(2,Pin.OUT)
led2=Pin(4,Pin.OUT)
led3=Pin(5,Pin.OUT)
while True:
led1.value(1)
sleep(3)
led1.value(0)
sleep(3)
led2.value(1)
sleep(1.5)
led2.value(0)
sleep(1.5)
led3.value(1)
sleep(3)
led3.value(0)
sleep(3)
CAI KHAC:
while True:
buttonStatus = btn.value(0)
print (buttonStatus)