Python Code:

import RPi.GPIO as GPIO

import time

servoPIN = 17

GPIO.setmode(GPIO.BCM)

GPIO.setup(servoPIN, GPIO.OUT)

p = GPIO.PWM(servoPIN, 50) # GPIO 18 als PWM mit 50Hz

p.start(2.5) # Initialisierung

i = 0

try:

while True:

p.ChangeDutyCycle(5)

time.sleep(0.1)

p.ChangeDutyCycle(2.5)

time.sleep(0.1)

if i == 20:

break

i = i + 1

p.stop()

GPIO.cleanup()

except KeyboardInterrupt:

p.stop()

GPIO.cleanup()