import machine
import time

# Configure servo motor
servo_pin = 18  # GPIO pin connected to the servo
freq = 50  # PWM frequency
servo = machine.PWM(machine.Pin(servo_pin), freq=freq)

# Function to set angle of the servo
def set_angle(angle):
    duty = (angle / 180) * 102 + 51
    servo.duty(int(duty))

# Rotate the servo to 0 degrees
set_angle(0)
time.sleep(1)

# Rotate the servo to 90 degrees
set_angle(90)
time.sleep(1)

# Rotate the servo to 180 degrees
set_angle(180)
time.sleep(1)

# Rotate back to 90 degrees
set_angle(90)
time.sleep(1)

# Cleanup
servo.deinit()