DC Motor Interfacing with PIC Microcontroller ( PIC18F2550 ) in Proteus [step by step]

DC Motor

This tutorial will describe,  how to interface a DC motor with a Microcontroller and in this tutorial, I will use pic18f2550 microcontroller. Generally, to control a DC motor we need voltage 12v with 300mA current. Basically a microcontroller works on 5v and can't provide the current follow to operate a DC motor.As we know a motor can produce back emf, we need other technique to operate .The solution will be a H-Bridge circuit or L293D ic.

H-Bridge Circuit 

L293D

We can operate two motors through this IC. Here pin 1 is to enable input 1(pin1)&2(pin7) for input and 3&6 pins for output. Pin9 enables 3(pin 10)&4(15) as input and 14&11 pins as output. We will connect pin2 & pin7 with our microcontroller's pin RC0 and RC1 respectively. Now, look at the picture given below.

DC Motor Rotation Controlling

Now Create a new project in Proteus. If you are a beginner, just follow the instructions.

Proteus Circuit:

How to Create a New Project in Proteus 8_Step1

How to Create a New Project in Proteus 8_Step2

How to Create a New Project in Proteus 8_Step3

How to Pick parts from Proteus library

How to find Power ,Ground etc

Now just complete the circuit as I have given below.

Interface DC Motor with pic Microcontroller

Now we need source code to run this microcontroller. So let's create a project in MikroC.

MikroC Project :

Create a project in mikroC_Step_1

Create a project in mikroC_Step_2

Create a project in mikroC_Step_3

#Source Code :
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


void main() {
CMCON = 0x07; // To turn off comparators
ADCON1 = 0x0F;
Trisc=0x00;
delay_ms(1000);
while(1){
/////// Step1: Rotate Motor Clockwise
PORTC.F0=1;
PORTC.F1=0;
delay_ms(4000);   //delay for 4 sec
/////// Step2: Stop the Motor
PORTC.F0=0;
PORTC.F1=0;
delay_ms(4000);   //delay for 4 sec
 /////// Step3: Rotate Motor Anti-Clockwise
PORTC.F0=0;
PORTC.F1=1;
delay_ms(4000);   //waiting for 4 sec
  /////// Step4: Again Stop The Motor
PORTC.F0=1;
PORTC.F1=1;
delay_ms(4000);   //delay for 4 sec
}
}

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

Now run the program and save the hex file on your computer .

Run project in mikroC

Now go to the proteus circuit and load the hex to microcontroller

Load hex to microcontroller

Run the proteus project.

Run Proteus Project

Result :

DC motor in Clockwise direction

DC motor in Anti-Clockwise direction

      Download Proteus File & Hex file

                          Just Click on  '' SKIP ADD '' and You will get the download link

Thank You!