from machine import PWM, Pin, ADC
from time import sleep

led=PWM(Pin(2),freq=2000,duty=0)
pot = ADC(Pin(34))
pot.atten(ADC.ATTN_11DB)

while True:
    valorPot=int(pot.read()/4)
    led.duty(valorPot)
    sleep(0.01)
    print(valorPot)