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Blinking LED is a popular application when getting started in embedded development. By customizing and utilising LED-based modules into the Raspberry Pi board, exciting projects can be obtained. A countdown timer, a digital clock, a traffic light controller, and a remote light controller are a list of LED-based inspired project samples for Raspberry Pi. An LED is a simple actuator device that displays lighting and can be controlled easily from a Raspberry Pi. This book will provide you with the ability to control LEDs from Raspberry Pi, starting from describing an idea through designing and implementing several projects based on LEDs, such as, 7-segments, 4-digits 7 segment, and dot matrix displays. Beginning with step-by-step instructions on installation and configuration, this book can either be read from cover to cover or treated as an essential reference companion to your Raspberry Pi. Samples for the project application are provided such as a countdown timer, a digital clock, a traffic light controller, a remote light controller, and an LED-based Internet of Things, so you get more practice in the art of Raspberry Pi development. Raspberry Pi LED Blueprints is an essential reference guide full of practical solutions to help you build LED-based applications.

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Neeraj Sharma Oct 22, 2015

Very well documented step by step approach to understand Raspberry Pi and the its interaction with the real world examples. Enjoyed the detail oriented approach - a must have for beginners to intermediate use.

Amazon Verified review

Neal A Gordon Oct 21, 2015

Packt consistently creates well written, applicable books on electronics and programming with good examples. I have learned Linux personal computing and servers, python, and specific python modules with great detail from Packt.This book in particular is a great introduction to Linux with Raspberry Pi and electronics. The code examples and a pdf can be downloaded or viewed on their website. The examples are fun and useful and you will learn faster than learning from forums.Help support open source software by buying books from Packt!

Annette Herbst Oct 29, 2015

When I first saw the title of the book I thought by my self, why for god sake does someone publish a book on such a seemingly simple task on how to switch LEDs on and off with a Raspberry Pi (RPi). But curiosity won and I bought the book.Chapter 1 shortly introduces the raspberry and gives hints to install the required software. The first project starts already on page 7: It is (of course) a "Hello World project”: Three LEDs will blink, a GPIO will be read and several colors will be displayed using a RGB LED.Chapter 2 deals with 7-segment displays, shift registers and the design and implementation of a countdown timer.Chapter 3 describes a 4-digit-7-segment digital clock, introduces the I2C Bus and implements a digital clock using an OLED Graphic display.In Chapter 4 the author "plays" with an 8x8 LED dot matrix display in connection with the integrated circuit MAX7219.Chapter 5 describes a traffic light controller. In course of this project a channel relay module is introduced, a method is presented which allows the expansion of the number of GPIOs of the RPI. Finally, the author connects several integrated circuits of type MCP23017 to build a cascaded traffic light controller.Chapter 6 shows how to set up Bluetooth and establishing Bluetooth communication between a RPi und an Android Device in order to build a remote LED light controller.Chapter 7 is the most interesting part of the book because it deals with controlling LEDs via the Internet ("Internet of Things"). The chapter starts showing how to connect the RPI to a network (cable and WiFi), it then demonstrates how to implement Node.js on the RPi. After building a simple webserver using Node.js the author implements a RESTful system using Express for Node.js. He uses JSON to exchange data between the server and the client. Then he develops a program that allows the user to control LEDs connected to the RPi by a browser running on another (distant) computer. In the final part of this chapter the author develops an Android App by means of PhoneGap, a tool developed to build a cross-platform mobile app. This PhoneGap App combined with the above mentioned program enables the user to switch on 3 LEDs with his mobile Android device.To summarize:I don’t regret that I bought the book. It is well written and you don't have to be an EE-student to understand the technical content of chapter 1-6. The material presented in chapter 7 is quite ambitious for a newbie and it takes further reading of the given references to fully understand what’s going on.In order to really benefit from this book the reader should have some knowledge of Python, Java, Node.js, JSON etc. But even if he doesn't have prior knowledge, this book will provide him with well-documented "blueprints" which enables him to build the projects described therein himself. With minor changes he may use the blueprints to control other sensors or actuator.

Christoph Lipp Oct 27, 2015

I really liked the book. Reading through it was a breeze and following the example provided a lot of insight in gpio programming in python and with the raspberry in general. I'm looking forward to get a bigger led matrix panel and build a huge led clock :-DNext I'd like to try a few of the examples on the windows 10 iot core operating system, since working with visual studio and c# is also a lot of fun.

Philip Verhoeven Oct 24, 2015

I bought the e-book and I liked that the book goes (far) beyond the basics.The experiments are fun tot try (after reading this book, I look different at traffic lights :-)), but challenging and rewarding.In my opinion previous experience with the RaspberryPi is necessary.

Raspberry Pi LED Blueprints: Design, build, and test LED-based projects using the Raspberry Pi

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