from machine import Pin, PWM
import time

servo_pin=Pin(15)
pwm=PWM(servo_pin)

pwm.freq(50)

def set_angle(angle):
  duty = int(65535 * (angle / 180))
  pwm.duty_u16(duty)


set_angle(90) #default position

print("Duty cycle at 90 degrees:", pwm.duty_u16())

time.sleep(1)

set_angle(0)

print("Duty cycle at 0 degrees:", pwm.duty_u16())

time.sleep(1)

set_angle(180)

print("Duty cycle at 180 degrees:", pwm.duty_u16())