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Archive for June, 2010

So here we are, we’re going to build us a motor controller to control 2 motors in both directions. First we’ll start off with our design which shows how our components will be connected and our reasoning, we could of just bought a motor controller chip like the L298N but we will rather learn something from our build and it should be easier to use than the L298N chip. Another on the plus our motor controller will have is about 1/2 the Vce of the L298N which is an advantage when dealing with low voltage motors and low voltage power supplies as well as back EMF protection (both will be explained).

This is quite a long post and do remember that I’m also new to understanding all of these concepts so do feel free to correct me if I’m doing something wrong! I’ve spent a good month checking all this out, posting on an electronics forum and trying to grasp the concepts I’ll be explaining you.

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We know how to control our 2 motors in both directions and we also know how to use our Phototransistors to detect if an object is close, now we put both of these together to form our robot. In this part we focus more on producing the code as we’ve already put our robot together as below.

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