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September 25, 2015 08:46
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Quick servo code for the Beaglebone Black using the Adafruit BBIO python library and a Parallax Standard servo
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| import Adafruit_BBIO.PWM as PWM | |
| servo_pin = "P8_13" | |
| duty_min = 2.5 | |
| duty_max = 13.1 | |
| duty_span = duty_max - duty_min | |
| PWM.start(servo_pin, duty_span * 0.5, 60.0) | |
| while True: | |
| angle = raw_input("Angle (0 to 180 x to exit):") | |
| if angle == 'x': | |
| PWM.stop(servo_pin) | |
| PWM.cleanup() | |
| break | |
| angle_f = float(angle) | |
| duty = ((angle_f / 180) * duty_span + duty_min) | |
| print "Setting duty to %.2f%%" % duty | |
| PWM.set_duty_cycle(servo_pin, duty) |
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This variation worked well for me. The adafruit tutorial does not offer much detail on this part.
Thank you so much for sharing. Im a little further along in better understanding PWM and servos.