L293D based DC Motor Driver Interfacing with Arduino UNO in 5V Mode

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DC Motor Driver is a L293D based motor driver interface board from ABLab Solutions. The main aim of interfacing DC motor with any Arduino UNO is to control the direction and speed of a DC motor. But due to high voltage and current requirement of DC motors, it cannot be interfaced directly with Arduino UNO . For to interface DC motor with any Arduino, you need a motor driver. Motor driver is basically a current amplifier which takes a low-current signal from the Arduino UNO and gives out a proportionally higher current signal which can control and drive a motor. L293D is a dual H-Bridge motor driver IC. With one L293D IC we can interface two DC motors which can be controlled in both clockwise and counter clockwise direction.

In this project, we will learn How to interface a L293D based DC Motor Driver in 5V mode with Arduino UNO. The 5V mode is used to run a DC motor at constant speed in clockwise and anti-clockwise direction. In 5V mode, 5V is given to two enable pins of L293D. Here, we will use the DC Motor Driver to control the direction of two DC motor mounted on a Robot at constant speed. The Arduino UNO will provide the necessary signal to the DC Motor Driver to run the robot in forward, left, right, reverse direction and to stop it respectively each for 2 minutes. The below table shows the different directions of DC motor with different signals to DC Motor Driver.