from machine import ADC, Pin, PWM
import time

pot = ADC(pin(26))  # GP26 = ADC0
led = PWM(pin(15))  # LED + 220옴 저항
led.freq(1000)      # 1kHz로 깜빡임 (눈에는 안보임)

while True: 
    value = pot.read_u16()  # 0 65535
    led.duty_u16(value)     # 그대로 밝기로 조절
    time.sleep(0.02)