from utime import sleep
sleep(0.1) # Wait for USB to become ready

from machine import ADC, Pin,PWM
pot = ADC(Pin(26))  # create ADC object on ADC pin
led = PWM(Pin(0), freq=2000)
while 1:
    value=pot.read_u16() #read from pot
    print("adc value is",value)
    led.duty_u16(value)

    sleep(0.5)