from machine import Pin, ADC 
import utime 
potenciometro= ADC(0)
led1= Pin(18, Pin.OUT)
led2= Pin(19, Pin.OUT)
led3= Pin(20, Pin.OUT)

while True:
    valor=potenciometro.read_u16()
    print(valor)
    utime.sleep_ms(500)
    if valor < 27000:
        led1.value(1)
    else:
        led1.value(0)
    if valor >= 27000:
        led2.value(1)
    else:
        led2.value(0)
    if valor >= 43000:
        led3.value(1)
    else:
        led3.value(0)