import machine
import utime

#poti = machine.ADC(0)
led = machine.PWM(machine.Pin(15))
led.freq(1000)

zuwachs=1000
pause=2

while True:
    print("es wird: heller ...")
    utime.sleep(pause)
    for hell in range(1,65536,zuwachs):
        led.duty_u16(hell)
        print("heller: ",hell)
        utime.sleep(0.05)
        
    print("es wird: dunkler ...")
    utime.sleep(pause)
    for hell in range(65536,1,-zuwachs):
        led.duty_u16(hell)
        print("dunkler: ",hell)
        utime.sleep(0.05)