Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: newuser on March 03, 2008, 04:29:16 AM

Title: Motor Controller needed?
Post by: newuser on March 03, 2008, 04:29:16 AM

Hi friends,

I am new to robotics and I need some assistance.

I am developing a university project on robotics. I am using 12V DC Motors (4 pieces) for wheeled locomotion. I will be using a PIC microcontroller with probably PICBasic or C as the software language. I need to know:

At present, I need a motor controller to control the motors? or the microcontroller is enough to control all the 4 motors? Please help me with this, i have searched enough with no luck.

Thanks and regards.

Title: Re: Motor Controller needed?
Post by: karmax on March 03, 2008, 09:33:22 AM

you must buy any motor controller for controlling your robot.like l298

Title: Re: Motor Controller needed?
Post by: airman00 on March 05, 2008, 10:33:56 PM

microcontrollers cannot control motors directly

You need something called an H-Bridge ( search google and this forum , there is tons about it).

There are H-Bridges in chips like the L298 that karmax mentioned, or you could make your own H bridge with transistors.

Also, for your robot , I advise you to use only two motors and a caster ( or two). This makes less frictio. But it depends on your application. What do you want this robot of yours to do?