Usage Of ServoRPi

How To Use The ServoRPi Library.

First, we should import the ServoRPi.servo library. We should also import the RPi.GPIO as you will need it to control the servo.

• import ServoRPi.servo as servo
• import RPi.GPIO as GPIO

Next, we will set up the output pin type (.BOARD or .BCM). In our case, it is  .BOARD

• GPIO.setmode(GPIO.BOARD)

Now, we will set up the pin as an output

• GPIO.setup(11, GPIO.OUT)

We will now give the pin as the PWM pin and name it servo1, pin no. as 11, and frequency as 50 hertz (most servos are 50 hertz)

• servo1 =  GPIO.PWM(11, 50)

Now let’s start the servo and instead of the number, we will write the function servo.startposition(<angle>) where <angle> will be the angle from 0 to 180. So the line will be servo1.start(servo.startposition(x))

• servo1.start(startposition(0))

Then we will now change the direction of the servo by we will write the line servo1.ChangeDutyCycle()  where the is the function – servo1.write() and where is the angle you want to output. So the whole line is now –

• servo1.ChangeDutyCycle(servo1.write(<angle>))

So now the whole code is,

• import ServoRPi.servo as servo
• import RPi.GPIO as GPIO
• GPIO.setmode(GPIO.BOARD)
• GPIO.setup(11, GPIO.OUT)
• servo1 =  GPIO.PWM(11, 50)
• servo1.start(startposition(0))
• servo1.ChangeDutyCycle(servo1.write())