Controlling a Servo Motor with The Raspberry Pi GPIO Port

Before proceeding double check your wiring.



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import RPi.GPIO as GPIO
import time

Set up the port as a PWM port with a 50Hz frequency:



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GPIO.setmode(GPIO.BCM)

GPIO.setup(18, GPIO.OUT)

p = GPIO.PWM(18, 50)

Start at the 0 degree position (for most motors, this is a 2.5% duty cycle).



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p.start(2.5)

Move that motor around.



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p.ChangeDutyCycle(5.0)



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p.ChangeDutyCycle(7.0)



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p.ChangeDutyCycle(4.0)
time.sleep(0.2)
p.ChangeDutyCycle(10.0)
time.sleep(0.2)
p.ChangeDutyCycle(5.0)
time.sleep(0.2)
p.ChangeDutyCycle(7.0)
time.sleep(0.2)



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p.stop()
GPIO.cleanup()



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