from machine import Pin, ADC
from time import sleep

pot = ADC(Pin(34))
pot.width(ADC.WIDTH_10BIT)

led = Pin(2, Pin.OUT)   # change pin number if your LED is connected elsewhere

while True:
    pot_value = pot.read()
    print(pot_value)

    # 10-bit max value = 512
    if pot_value >= 512:
        led.value(1)   # LED ON
    else:
        led.value(0)   # LED OFF

    sleep(0.1)