from gpiozero import AngularServo

from time import sleep

# Create an AngularServo object with the specified GPIO pin,

# minimum pulse width, and maximum pulse width

servo = AngularServo(18, min_pulse_width=0.0006, max_pulse_width=0.0023)

try:

   while True:

       # Set the servo angle to 90 degrees

       servo.angle = 90

       sleep(1)  # Delay for 1 second

       # Set the servo angle to 0 degrees

       servo.angle = 0

       sleep(1)  # Delay for 1 second

       # Set the servo angle to -90 degrees

       servo.angle = -90

       sleep(1)  # Delay for 1 second

finally:

   # Set the servo angle to 0 degrees before exiting

   servo.angle = 0

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