BeagleBone Black | Adafruit | Python | Servo Motor

servo.py

import Adafruit_BBIO.PWM as PWM
 
servo_pin = "P8_13"
duty_min = 3
duty_max = 14.5
duty_span = duty_max - duty_min
 
PWM.start(servo_pin, duty_min, 60.0)
 
while True:
    v = raw_input("Angle (0 to 1.0 x to exit):")
    if v == 'x':
        PWM.stop(servo_pin)
        PWM.cleanup()
        break

    v = float(v)
    if v < 0:
      v = 0
    elif v > 1:
      v = 1

    duty = float(v) * duty_span + duty_min
    PWM.set_duty_cycle(servo_pin, duty)