Chapter 10. Motors
Electronic motor systems are a very important element in robotics and moveable automation systems. They may include a direct current (DC), a stepper, and servo motors. In this chapter I will tell you how they differ and also introduce the PID controller. Then, I will tell you how to control motors using the RPi2/RPi3 through dedicated motor HATs. The central element of these HATs is the pulse-width modulation (PWM) module. Accordingly, I first explain how to write a driver for controlling PWM. Subsequently, I use it to steer DC and stepper motors. Finally, I control a wheel attached to the servo-mechanisms. I also discuss automatic motor speed adjustments similar to those used in PID. After completing this chapter, you will ...
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