#3 nút nhấn 3 đèn
from machine import Pin
from time import sleep

button1 = Pin(19, Pin.IN, Pin.PULL_UP)
button2 = Pin(18, Pin.IN, Pin.PULL_UP)
button3 = Pin(5, Pin.IN, Pin.PULL_UP)

led1 = Pin(25, Pin.OUT)
led2 = Pin(27, Pin.OUT)
led3 = Pin(14, Pin.OUT)

while True:
    if button1.value()==0:
        led1.on()
        print('1')
    else:
        led1.off()   

    if button2.value()==0:
        led2.on()
        print('2')
    else:
        led2.off()   

    if button3.value()==0:
        led3.on()
        print('3')
    else:
        led3.off()  
    sleep(0.1)