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8051 Microcontrollers, 2nd Edition by Subrata Ghoshal

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21

INTERFACING: DC MOTOR

CHAPTER OBJECTIVES

In this chapter, the reader is introduced to interfacing of DC motors with the 8051 microcontroller. After completion of the chapter, the reader should be able to understand

  • How are DC motors interfaced with 8051 microcontroller.
  • How to control speed of revolution of a DC motor using 8051.
  • How to control the direction of rotation of a DC motor using 8051.
  • How to interface relay and optocoupler for interfacing heavy-duty DC motors.

21.1 | Introduction

Motors are of various types out of which DC motor, Stepper motor and Servomotors are more widely used for different digital-control operations. In this and next two chapters, we will discuss about different interfacing issues related to these motors. ...

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