import RPi.GPIO as GPIO
from time import sleep

GPIO.setwarnings(False)
GPIO.setmode(GPIO.BOARD)

GPIOpin=11

def setup():
    GPIO.setup(GPIOpin,GPIO.OUT)
    p = GPIO.PWM(GPIOpin, 50)
    p.start(0)

def loop():
    p.ChangeDutyCycle(3)
    sleep(1)
    p.ChangeDutyCycle(12)
    sleep(1)
	SetAngle(30)
	sleep(1)

def destroy():
    p.stop()
    GPIO.cleanup()

def SetAngle(angle):
	duty = angle / 18 + 2
	GPIO.output(GPIOpin, True)
	p.ChangeDutyCycle(duty)
	sleep(1)
	GPIO.output(GPIOpin, False)
	p.ChangeDutyCycle(0)


if __name__ == '__main__':
    try:
        loop()
    except KeyboardInterrupt:
        destroy()