Please read the changelog anytime you update the library!** **The PWM Duty Cycle range was reversed in 0.0.15 from 100 -0 to 0 -100 . Please update your code accordingly.** **Adafruit’s BeagleBone IO Python Library** This is a set of Python tools to allow GPIO, PWM, and ADC access on the BeagleBone using the Linux 3.8 Kernel and above .