PIC 16F877A bi-directional DC motor control

[mailus]

hi.,
I want to control DC motor(12V,<500mA) Speed and Direction also using PIC 16F877A Microcontroller.
How to implement it with H-Bridge(without using H bridge IC's).what are the ways to control the speed of the motor.
please explain what are the ways to generate PWM.

 

[wp100]

Hi,

Think you are using Mikroe C, there should be plenty of examples /tutorials around on PWM.
The 877A has an inbuilt hardware pwm module so its easy enough to initiate.

To contol the motor you have two common ways of controlling it, a single transistor to drive the motor, using another pic output to turn a double pole relay on /off to change the motors polarity /direction.

Using a H bridge you use 2 sections for forwards and 2 sections for reverse.

Again many examples over the web and this forum eg https://www.edaboard.com/threads/182152/

 

[mailus]

thank you wp100.,
i need circuit diagram how to interface the motor and control the direction and speed.i want to achieve it by transistors or mosfet.