from machine import Pin, ADC, PWM
import time
led = PWM(Pin(5, mode = Pin.OUT)) 
led.freq(1000)
pot = ADC(Pin(34,mode = Pin.IN))
pot.atten(ADC.ATTN_11DB)
while True:
    valeur_adc = pot.read()
    valeur_pwm = (valeur_adc*1023) // 4095
    led.duty(valeur_pwm)
    time.sleep(0.1)