Archives

Serial Ports are dead? Think again!

Your Desktop-PC doesn’t have a Serial Port in the back side? Don’t be so sure of it. If you can’t see it, doesn’t mean it ain’t there! All you have to do is look properly. If you are a full-time laptop user, stop right here! This article is of no...

May 30, 2014

Servo Motor Interface - Looking behind Arduino Servo library

Have you ever looked into the Arduino source files? Well you should be!! I have been hanging around there for quite some time now. The Arduino Servo class has half a dozen functions to handle all the servo related tasks like the attach(), read(), write() and detach(). There was too...

May 28, 2014

Arduino Like Serial / UART Library for PIC 18 Microcontrollers

In my last post describing the implementation of a circular buffer I mentioned that I was working on a serial UART library for PIC 18. Well it is now completed! Yesterday I tested all the functions of the library and its working like a charm! In this post I will...

May 23, 2014

Basics of DC Motor Drive and Speed Control for Robots

DC motors are really cheap and can be found very easily. In this post we will discuss the basic theory behind the DC motor drive system and its speed control. Having some basic understanding of how your motor driver works will play a key role in building your own circuits...

May 18, 2014

Implementing Circular/Ring Buffer in Embedded C

Embedded software often involves state machines, circular buffers and queues. In this article will give you an overview of the data structure and walks you through the steps involved in implementing circular/ring buffers in low memory devices. For those of you who don’t know what a circular buffer is, it...

May 16, 2014

Testing RF Transmitter and Receiver Circuit

After publishing the article Make a simple RC car I have received a lot of comments and e-mails from readers who have faced some difficulties while trying to make the circuit by themselves. I have complied a small list of testing methods for various components that will help your narrow...

Apr 27, 2014

Circuit Debugging - Tips Tricks & Techniques

Here we are with a TTT (Tips, Tricks and Techniques) post again after a long time! Firstly I have to apologize for the recent inactivity in the blog. I’ve been a little busy over the last few months. But guess what! I have some good news! I think I’ll soon...

Mar 2, 2014

PIC Pin Diagram, A printable copy for quick reference

Today when I was hooking up my PIC micro on to a breadboard for a quick demonstration to a friend of mine, I realized how often I needed the Pin Diagram from the datasheet. All this while I have been opening the datasheet and scrolling through to page 4. I...

Nov 16, 2013

Reading datasheet, what to look for and how to find them

Did you know that experienced engineers spend up to an hour on every major component that they are going to be using for upcoming projects? Project as in, real commercial work involving a lot of money and man hour.. not just some hobby project. When a component is being purchased...

Nov 12, 2013

Graphic LCD Command Sheet HTML Version

Yet again I was looking for the GLCD command sheet in the internet and failed to find any good resolution images that I can use for post references. Even the data sheet looks really bad. So here I am with a HTML Version of the GLCD command sheet just like...

Nov 3, 2013