import machine
import time

luzvermelha = machine.Pin(11, machine.Pin.OUT)
luzazul = machine.Pin(10, machine.Pin.OUT)
luzamarela = machine.Pin(8, machine.Pin.OUT)

btn_1 = machine.Pin(7, machine.Pin.IN, machine.Pin.PULL_UP)
btn_2 = machine.Pin(0, machine.Pin.IN, machine.Pin.PULL_UP)
btn_3 = machine.Pin(1, machine.Pin.IN, machine.Pin.PULL_UP)

while True:

    luzvermelha.off()
    luzazul.off()
    luzamarela.off()

    if btn_1.value() == 0:
        luzvermelha.on()

    elif btn_2.value() == 0:
        luzazul.on()

    elif btn_3.value() == 0:
        luzamarela.on()

    time.sleep_ms(20)