USB DC Motor Controller using PIC18F4550

Submitted by RakeshRon on Sun, 11/04/2012 - 21:57

USB DC Motor Driver using PIC18F4550

pic18f4550 interface with l293d motor driver to drive motor in forward and reverse

Schematic pic18f4550 Interface L293D

Download this schematic as EAGLE Editor V 5.11.0

Requirements

This a small project on controlling D.C motor with USB pic18f4550 interface board with L293D motor Driver. L293d DC motor driver is linked to pic18f4550 which is controlled by USB from computer.

A small application [C#] is controlling my pic18f4550 USB interface board with my computer, enabling me to control my board with keyboard. The output of the microcontroller is given to the input of a l293d motor controller , hence enabling me to control my DC motor in ( forward / reverse ) that is Clockwise and Counter Clockwise | anti-clock (cw/ccw) direction.

If you really interested in robotics and controlling stuffs then one of the most basic thing is to control your own applications like DC Motors , Stepper Motors , Servo (with pwm) etc etc. So lets do it with kind of absolute beginner level with DC motors.
IF you are really beginner then I suggest watch all the three videos.

http://www.rakeshmondal.info/pic18f4550-project-tutorial-part-1-USB

The working of the this project is very simple

USB + C# [HID] > pic18f4550 > l293D > DC motor

WORKING OF THE L293D MOTOR CONTROLLER

ABOUT L293D

You can find the pin diagram of l293d motor controller with a short Google, the chip is kind of self explanatory when you see it. With one single chip you can control two D.C motors to rotate in forward/ reverse direction on your command.

This chip understands only logic 0 and logic 1 signals as input control signal , we are going to generate the logic 0 and 1 with the help of a pic18f4550 microcontroller , the logic 0 and 1 will be fed to the input of the l293d and motor will be connected to the out pins of l293d. A more detailed description of the working of a l293d is explained in my topic l293d.

Watch the video below

A bit more detailed video for this motor controller, you can use it the way you want it, like robotic arms.

A Single L293D motor controller chip enables you to control two motors, [two motors per chip] , in India the price of l293d costs around 80 rs/- , i don't know about costs in other country :) :).

You have to make my USB Interface board first to make this project done, once you are done connect the l293d with power and connect it with pic18f4550 as I have mentioned in the video "INTRODUCTION to L293D" or follow the schematic.You can easily make this entire circuit on breadboard or a PCB.

Thats all you need, thanks for watching

Thanks for reading

Rakesh Mondal

Ron

tags:

L293D