from machine import Pin, ADC, PWM
from time import sleep_ms
pot = ADC(Pin(34))
pot.atten(ADC.ATTN_11DB)
pot.width(ADC.WIDTH_12BIT)
led = Pin(4, Pin.OUT) 
while True:
    pot_value = pot.read()
    led.value(not led.value())
    sleep_ms(pot_value//10)
    print(pot_value)