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

while True:
    valor=potenciometro.read_u16()
    nivel = valor/65535 * 500
    print("Nivel: ",nivel, "Litros")
    utime.sleep_ms(500)
    if nivel > 450:
        led1.value(1)
        utime.sleep_ms(700)
        led1.value(0)
        utime.sleep_ms(300)
    else:
        led1.value(0)
    if nivel < 70:
        led2.value(1)
        utime.sleep_ms(500)
        led2.value(0)
        utime.sleep_ms(500)
    else:
        led2.value(0)