from machine import Pin, PWM
import time

# Initialize PWM on GPIO 15 with a frequency of 50 Hz (standard for servos)
servo = PWM(Pin(15), freq=50)

# Function to set the angle of the servo motor
def set_angle(angle):
    # Convert the angle (0 to 180 degrees) to the corresponding duty cycle (0 to 1023)
    # The formula ensures that the duty cycle is proportionate to the angle
    duty = int((angle / 180.0) * 1023)
    # Set the duty cycle of the PWM signal to control the servo position
    servo.duty(duty)

# Infinite loop to sweep the servo back and forth
while True:
    # Sweep the servo from 0 to 180 degrees
    for angle in range(0, 181, 1):  # Increment the angle from 0 to 180
        set_angle(angle)  # Set the servo to the current angle
        time.sleep(0.01)  # Small delay to allow the servo to move to the position

    # Sweep the servo from 180 to 0 degrees
    for angle in range(180, -1, -1):  # Decrement the angle from 180 to 0
        set_angle(angle)  # Set the servo to the current angle
        time.sleep(0.01)  # Small delay to allow the servo to move to the position