Pulse width modulation
The pulse width modulation (PWM) module is essentially used to generate a square wave signal at a fixed frequency, and then vary its duty cycle. It gives us the ability to accurately generate pulses of a configured duration, repeating at a configured frequency. Like the GPIO module, the PWM module on the BeagleBone Black operates at 3.3V. These PWM signals can be used to control servo motors, vary the speed of DC motors and the brightness of LEDs, and with some additional external components they can be used to generate varying voltages.
Universal asynchronous receiver/transmitter
The universal asynchronous receiver/transmitter ...
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