from machine import *
from time import sleep

def trans(a, b, c, d, e):
    return (a-b)*(e-d)/(c-b)+d

servo = PWM(Pin(28))
servo.freq(50)
winkel = 0
while True:
    servo.duty_u16(trans(winkel, 0, 180, 1638, 8162))
    sleep(2)
    winkel = winkel + 10
    if winkel == 190:
        winkel = 0