How to control the speed and direction of DC motor using Arduino?

DC motor speed and direction control

In this project, we are going to use a very popular motor driver IC called an L293D. The advantage of using this chip is that we can control two motors at the same time, as well as control their direction. There is also a pin-for-pin compatible chip available known as the SN754410, which can also be used and has a higher current rating. The IC has its own internal diodes, so we do not need one for this project.