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Free Book Lets Make LED Matrix...
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Dear reader thank you for picking up this book and welcome to the wonderful and exciting world of LEDs. The idea for this book was born when I wanted to make my own LED moving signs, although internet was full of knowledge and ideas yet no where I could find a complete step by step solution as to help me in getting started. So I decided to compile my experiences in one place, helping students and hobbyists to begin. Moreover this project acts as a base point to learn many abstract ideas about programming and take a proper channel to develop applications in a “Laired” manner. The concepts and programming methodology you will learn in this book will be helpful in solving many other electronics projects you come across. There are many different hardware and software solutions to drive the LED matrices, I would however discuss the simplest one, that requires minimal hardware, and the one that is easily available anywhere in world. Secondly emphasis is on learning by doing, I shall take you step by step, to explain the concepts. It is very easy to publish the final software and hardware design, but that does not explain the hidden algorithms and brilliant ideas behind. You can always modify the code and experiment your way to extend whatever you learn in this book. Many experiments in the book will be mentioned to highlight the concepts and may not be actually used in the final code, yet they act as building sound understanding of what is happening under the hood. One special requirement for this project that I ultimately settled was to minimize the hardware requirements and try to implement the things through software techniques. Nevertheless I will talk a little bit about the additional hardware that can reduce the programmer’s work but add to the complexity of circuit design and therefore manufacturing. One of the major advantages of microcontrollers is to reduce the physical hardware and do the needful done in software. My second requirement was to make the hardware pluggable into any microcontroller lines, may it be PIC, AVR or the commonly used Arduino. I will however use PIC microcontroller, for it is easily available and easy to program.
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