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Like its predecessors in the 300 series of electronics projects books, 303 Circuits is aimed at the active electronics enthusiast, professional or amateur. Since the series was started in the early 1980s, many thousands of readers have found in these books that new approach, new concept, or new circuit they were looking for. In 303 Circuits you will find new ideas, new concepts and new circuits covering the gamut of electronics. The book is arranged in subject sections to make it easier for you to find the circuit or idea you are looking for.

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Clever Tricks with ATmega328 Pro Mini Boards With a simple Pro Mini board and a few other components, projects that 20 or 30 years ago were unthinkable (or would have cost a small fortune) are realized easily and affordably in this book: From simple LED effects to a full battery charging and testing station that will put a rechargeable through its paces, there’s something for everyone. All the projects are based on the ATmega328 microcontroller, which offers endless measuring, switching, and control options with its 20 input and output lines. For example, with a 7-segment display and a few resistors, you can build a voltmeter or an NTC-based thermometer. The Arduino platform offers the perfect development environment for programming this range of boards. Besides these very practical projects, the book also provides the necessary knowledge for you to create projects based on your own ideas. How to measure, and what? Which transistor is suitable for switching a certain load? When is it better to use an IC? How do you switch mains voltage? Even LilyPad-based battery-operated projects are discussed in detail, as well as many different motors, from simple DC motors to stepper motors. Sensors are another exciting topic: For example, a simple infrared receiver that can give disused remote controls a new lease on life controlling your home, and a tiny component that can actually measure the difference in air pressure between floor and table height!

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Elektronik-Praxis für Einsteiger (E-book)

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Whether you are an electronics enthusiast or engineering professional, this book provides the reader with an introduction to the use of the CadSoft’s EAGLE PCB design software package. EAGLE is a user-friendly, powerful and affordable software package for the efficient design of printed circuit boards. It offers the same power and functionality to all users, at a smaller cost than its competitors. A free version of EAGLE is available to enthusiasts for their own use. EAGLE can be used on the main computing platforms including: Microsoft Windows (XP, Vista or Windows 7); Linux (based on kernel 2.6 or above) and Apple Mac OS X (Version 10.6 or higher). Any hardware that supports these software platforms will run the EAGLE application. The book is intended for anyone who wants an introduction to the capabilities of EAGLE. The reader may be a novice at PCB design or a professional wanting to learn about EAGLE, with the intention of migrating from another CAD package. This book will quickly allow you to: obtain an overview of the main modules of EAGLE: the schematic editor; layout editor and autorouter in one single interface; learn to use some of the basic commands in the schematic and layout editor modules of EAGLE; apply your knowledge of EAGLE commands to a small project; learn more about some of the advanced concepts of EAGLE and its capabilities; understand how EAGLE relates to the stages of PCB manufacture; create a complete project, from design through to PCB fabrication. The project discussed in the book is a popular, proven design from the engineering team at Elektor. After reading this book while practicing some of the examples, and completing the projects, the reader should feel confident about taking on more challenging endeavors.

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Plot, Cut, Drill, Mill and Laser with the Z99 This book covers the construction, hardware, software, and operation of the Z99 – CNC machine. This is a multifunctional 4-axis machine for home construction. The capabilities of the Z99 machine include: large-format schematic plotting PCB plotting with etch-resist pens schematic plotting with conductive-ink pens letter cutting out of vinyl paper cutting PCB/substrate drilling PCB/substrate milling text milling laser engraving laser cutting of solder paste masks By making the support software available as freeware, readers of the book are challenged and encouraged to develop new applications for the Z99. The machine would not be of much use if the user has no option to create suitable files for the designs in mind. A large part of this book is dedicated to creating source files in a variety of freeware software packages, including Inkscape, DesignSpark PCB, KiCad, and FlatCAM. The book is also useful for readers keen to comprehend and then master the basic structure of HPGL, Gerber, Drill, and G-code files, as well as to have a go at deciphering them using software.

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In dit boek gebruiken we JAL (Just Another Language) om de PIC-microcontroller te programmeren in 60 oefeningen. JAL is makkelijk in gebruik en is een goede basis om programmeren in andere talen snel te leren. Na het lezen en toepassen van de voorbeelden in dit boek kan iedereen die zich hierin serieus heeft verdiept met behulp van JAL zelf de microcontroller aansturen. Je leert onder meer het programmeren van timers, analoog/digitaal omzetters, comparators, pulsbreedte regeling voor motoren en geluid, LED- en LCD-scherm aansturing, USB-connectie en communicatiemogelijkheden met computers of andere microcontrollers. Ook weet je aan het eind van het boek wat je moet doen om nu nog onbekende mogelijkheden te gaan toepassen. Met deze kennis kan iedereen van beginner tot meer gevorderde zijn creativiteit vorm geven in projecten met microcontrollers. Wil je verder met leren programmeren dan legt dit boek ook een zeer goede basis. Wie goed met JAL overweg kan en zich de gestructureerde wijze van denken heeft aangeleerd, zal de stap naar andere programmeertalen zoals Python, C++ enz. kunnen maken. Ook het programmeren van minicomputers zoals de Raspberry Pi en Arduino zijn mogelijkheden. Om te starten is geen kennis van elektronica nodig. Wie niets weet van elektronica, krijgt overal in het boek de noodzakelijke kennis aangereikt. Alle belangrijke en benodigde informatie staat in de tekst.

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Sensoren am Raspberry Pi (E-book)

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35 projecten met Raspberry Pi en wireless Arduino Internet of Things (alles aan het internet) is een trend die zich niet meer laat keren. We willen alles in huis met onze mobiel of tablet doen, van Facebook tot TV kijken, van lichten bedienen tot de temperatuur in de gaten houden. In dit boek laten we in 35 leuke en handige projecten zien hoe u op eenvoudige wijze zelf een Internet of Things systeem kunt aanleggen. We gaan in op de hardware (de perfecte combinatie van Raspberry Pi en Arduino) en de software om bediening via internet mogelijk te maken. We maken gebruik van Wi-Fi en radioverbindingen zodat er geen kabels dwars door uw huis hoeven. Wanneer u deze projecten maakt heeft u een compleet Internet of Things systeem waarmee u van alles in uw huis kunt bedienen en bekijken. Bijvoorbeeld of er post in de brievenbus ligt en of de auto in de garage staat. U kunt op vanaf de bank het licht aandoen en het alarm bedienen. Door de heldere uitleg kunt u de projecten eenvoudig aanpassen om bijvoorbeeld uw koffiezetautomaat of tv op afstand aan te zetten. Via de index vindt u gemakkelijk creatieve projecten die als voorbeeld kunnen dienen, zodat u zelfstandig alles met het internet kunt verbinden.

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This book is intended for electronics enthusiasts and professionals alike, who want a much deeper understanding of the incredible technology conquests over the pre-digital decades that created video. It details evolution of analogue video electronics and technology from the first electro-mechanical television, through advancements in Cathode Ray Tubes, transistor circuits and signal processing, up to the latest analogue, colour-rich TV, entertainment devices and calibration equipment. Key technological advances that enabled monochrome video and, eventually, colour are explained. The importance, compromises and techniques of maintaining crucial backward legacy compatibilities are described. The generation, signal processing and playback of analogue video signals in numerous capture, display, recording and playback devices together with operating principles and practices are examined. Technical and, often, political merits and deficiencies of key national and international video standards are highlighted. Several formats are shown to win and ultimately to co-exist. This book begins at fairly basic levels; concepts are introduced with human physiological perceptions of light and colour explained. This leads to the subject matter of luminance and chrominance; their equations and the circuits to process. There is full, detailed analysis of waveform shapes and timings inside video equipment and relevant popular connections e.g. S-video. Several analogue video projects which you can build yourself are also included in this book; with schematics, circuit board layouts and calibration steps to help you obtain the best results. The book makes use of many colour pages where the subject matter demands it (e.g. test cards). If you really want a deeper understanding of analogue video then this book is for you!

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Learn programming for Alexa devices, extend it to smart home devices and control the Raspberry Pi The book is split into two parts: the first part covers creating Alexa skills and the second part, designing Internet of Things and Smart Home devices using a Raspberry Pi. The first chapters describe the process of Alexa communication, opening an Amazon account and creating a skill for free. The operation of an Alexa skill and terminology such as utterances, intents, slots, and conversations are explained. Debugging your code, saving user data between sessions, S3 data storage and Dynamo DB database are discussed. In-skill purchasing, enabling users to buy items for your skill as well as certification and publication is outlined. Creating skills using AWS Lambda and ASK CLI is covered, along with the Visual Studio code editor and local debugging. Also covered is the process of designing skills for visual displays and interactive touch designs using Alexa Presentation Language. The second half of the book starts by creating a Raspberry Pi IoT 'thing' to control a robot from your Alexa device. This covers security issues and methods of sending and receiving MQTT messages between an Alexa device and the Raspberry Pi. Creating a smart home device is described including forming a security profile, linking with Amazon, and writing a Lambda function that gets triggered by an Alexa skill. Device discovery and on/off control is demonstrated. Next, readers discover how to control a smart home Raspberry Pi display from an Alexa skill using Simple Queue Service (SQS) messaging to switch the display on and off or change the color. A node-RED design is discussed from the basic user interface right up to configuring MQTT nodes. MQTT messages sent from a user are displayed on a Raspberry Pi. A chapter discusses sending a proactive notification such as a weather alert from a Raspberry Pi to an Alexa device. The book concludes by explaining how to create Raspberry Pi as a stand-alone Alexa device.

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Raspberry Pi (Neuauflage) | E-book

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A Hands-on Guide to Crafting Your Own Power Plant The book you are about to read provides a step-by-step guide for building a renewable energy power plant at home. Our goal was to make the book as practical as possible. The material is intended for immediate application with a small amount of theory. Yet, the theory is important as a foundation that saves time and effort by disabusing the readers of potential misconceptions. Specifically, upon having a firm understanding of photovoltaic physics, you will not be inclined to fruitlessly search for 90% efficient solar panels! We want our readers to be the “doers”. If the book gets covered in grime and some pages become torn while you are building your power plant – this is the best compliment to us. The book covers solar and wind energy. Also, a curious power source based on manure is discussed as well, giving the doers an opportunity to further develop the manure fuel cell. It is important to note that there are many companies offering installation of complete solar solutions. Upon installing the panels, the system is not owned by the customer. Therefore, there is no freedom for experimentation and optimization. Also, none can beat the cost of a DIY solution as well as the ultimate satisfaction. All that is written here is a result of us building a renewable energy solution in Southern California. As the book was completed, the energy began flowing!

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