Search results for "elektor or 01 or 02 or 2015 or de"

Röhren-Projekte von 6 bis 60 V (E-book)

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Program and Build Raspberry Pi 5 Based Ham Station Utilities with the RTL-SDR The RTL-SDR devices (V3 and V4) have gained popularity among radio amateurs because of their very low cost and rich features. A basic system may consist of a USB based RTL-SDR device (dongle) with a suitable antenna, a Raspberry Pi 5 computer, a USB based external audio input-output adapter, and software installed on the Raspberry Pi 5 computer. With such a modest setup, it is possible to receive signals from around 24 MHz to over 1.7 GHz. This book is aimed at amateur radio enthusiasts and electronic engineering students, as well as at anyone interested in learning to use the Raspberry Pi 5 to build electronic projects. The book is suitable for both beginners through experienced readers. Some knowledge of the Python programming language is required to understand and eventually modify the projects given in the book. A block diagram, a circuit diagram, and a complete Python program listing is given for each project, alongside a comprehensive description. The following popular RTL-SDR programs are discussed in detail, aided by step-by-step installation guides for practical use on a Raspberry Pi 5: SimpleFM GQRX SDR++ CubicSDR RTL-SDR Server Dump1090 FLDIGI Quick RTL_433 aldo xcwcp GPredict TWCLOCK CQRLOG klog Morse2Ascii PyQSO Welle.io Ham Clock CHIRP xastir qsstv flrig XyGrib FreeDV Qtel (EchoLink) XDX (DX-Cluster) WSJT-X The application of the Python programming language on the latest Raspberry Pi 5 platform precludes the use of the programs in the book from working on older versions of Raspberry Pi computers.

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23 projects to bring your microcontroller to life! This book contains 23 special and exciting artificial intelligence machine-learning projects, for microcontroller and PC. Learn how to set up a neural network in a microcontroller, and how to make the network self-learning. Discover how you can breed robots, and how changing a fitness function results in a totally different behavior. Find out how a PC program exposes your weak spots in a game, and ruthlessly exploits them. Build a free-will robot, or have one clean your floor! Example projects from the book: A microcontroller that learns what your favourite color is. A robot wandering about the house looking for someone to play with. A bred robot program that is incapable of crossing a black line. A microcontroller that learns how to play a game until You just can't win anymore. A PC that programs a microcontroller all by itself. Complete with free software that you can download containing: All source code for the microcontroller. All sources of compiled PC programs (MS Windows). JAL programming language, with special editor and extension libraries. Robot breed program. Plus a support webpage with links, errata and FAQ. Several artificial intelligence techniques are discussed and used in projects such as expert system, neural network, subsumption, emerging behavior, genetic algorithm, cellular automata and roulette brains. Every project has clear instructions and pictures so you can start immediately. Suggestions and literature links allow you to go way beyond the scope of the book. Even after you have built all the projects contained within, this book will remain a valuable reference guide to keep next to your PC. A unique book for anyone with an interest in artificial intelligence and machine learning.

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Create Models for 3D Printing, CNC Milling, Process Communication and Documentation Engineers dread designing 3D models using traditional modeling software. OpenSCAD takes a refreshing and completely different approach. Create your models by arranging geometric solids in a JavaScript-like language, and use them with your 3D printer, CNC mill, or process communication. OpenSCAD differs from other design systems in that it uses programmatical modeling. Your model is made up of primitives that are invoked using a C-, Java- or Python-like language. This approach to model design is close to the “mechanical work” done in the real world and appeals to engineers and others who are not a member of the traditional creative class. OpenSCAD also provides a wide variety of comfort functions that break the 1:1 relationship between code and geometry. This book demonstrates the various features of the programming language using practical examples such as a replacement knob for a LeCroy oscilloscope, a wardrobe hanger, a container for soap dispensers, and various other real-life examples. Written by an engineer with over 15 years of experience, this book is intended for Linux and Windows users alike. If you have programming experience in any language, this book will have you producing practical three-dimensional objects in short order!

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Elektronik-Praxis für Einsteiger (E-book)

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Apps für Elektroniker (E-book)

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Wollten Sie schon immer wissen, wie sich die klassische Funkempfängertechnik fortentwickelt hat? Wie funktionieren professionelle Funkempfänger heute und was können sie leisten? Wie ist es der modernen Funküberwachung und den Nachrichtendiensten möglich, gleich ganze Frequenzbänder in kürzester Zeit auszuforschen? Welche Empfangssysteme und Techniken stehen heute zur Verfügung? Möchten Sie auch ausgefallene Anwendungen von Empfängern kennenlernen und wissen, wie ein Software Defined Radio (Digitalempfänger) nun wirklich funktioniert und was der letzte Stand der entsprechenden Technik kann? Wodurch unterscheiden sich Kreuzmodulation und Intermodulation und worauf ist bei der messtechnischen Bestimmung und Datenblattvergleichen unbedingt zu achten? Warum folgen Intermodulationsprodukte nicht immer den Darstellungen von Lehrbüchern? Welche Artefakte zeigen digital nachgebildete Signalverarbeitungsketten abweichend von analogen Schaltungsstufen? Welche Auswirkungen haben derartige Kenngrößen tatsächlich auf die Empfangspraxis und warum kommt es nicht nur auf den IP3 an? Wie hängt beispielsweise die Grenzempfindlichkeit mit der Empfangsbandbreite zusammen? Was unterscheidet einen Signal/Rauschabstand nach der Beurteilung durch SINAD und (S+N)/N? Wie ist ein Empfangssystem zur Aufnahme kleinster Signalpegel zu optimieren? Fragen über Fragen – im vorliegenden Buch findet man die Antworten! Ausführlich und mit Details. Mit vielen speziell dafür erdachten Zeichnungen zur visuellen Erläuterung der Zusammenhänge. Mit durchgerechneten Fallbeispielen und dem stetigen Bezug zur Empfangspraxis. Großer Wert wurde den Darstellungen auf einheitliche Betrachtungsweise und durchgehende Systematik gelegt. Das erhöht die Übersichtlichkeit und erleichtert den Vergleich einzelner Vorgänge, Konzepte und Anlagen. Um den tatsächlichen Stand der Technik gut zu erfassen, wurden dutzende Patentschriften recherchiert und die Industrie mit eingebunden. Durch das sorgfältig aufbereitete Stichwortverzeichnis mit über 1200 Einträgen lassen sich die entsprechenden Stellen mit den Erklärungen rasch und punktgenau auffinden. Auch über die Thematik von Funkempfängern hinaus wird beim Studium der Lektüre vieles klar! Denn auch Messgeräte der Hochfrequenztechnik funktionieren vielmals nach ähnlichen Prinzipien. Wer den Inhalt durcharbeitet, kann wichtige Eigenschaften verstehen, beispielsweise von Spektrumanalysatoren und bei der Arbeit damit professionell vorgehen. Diese überarbeitete und erweiterte Neuauflage bringt erstmals sämtliche Bilder durchgehend in Vollfarbdruck, vertieft spezielle Themenschwerpunkte und bietet zusätzliche Fach- und Detailinformationen hinsichtlich den Realisierungsbeispielen gegenwärtiger Funkempfänger wie ferner durch das ergänzende Erörtern von jüngst verwendeten Messverfahren. Mit dem Erarbeiten und der Einbindung eines besonders umfangreichen, auf die Belange der heutigen Empfängertechnik zugeschnittenen Fach- und Übersetzungsglossars liegt zur Deutung entsprechender Fachbegriffe nunmehr eine Referenz vor.

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Now you can connect your Arduino boards with the official Arduino USB cable. Through a USB-C to USB-C with a USB-A adapter connection, this data USB cable can easily connect your Arduino boards with your chosen programming device. The Arduino USB cable has a nylon braided jacket in the typical Arduino colors white and teal. The connectors have an aluminum shell that protects your cable from harm at the same time as looking cool. Length: 100 cm Aluminium shell with logo Nylon braided jacket white and teal

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50+ Android Apps with Raspberry Pi, ESP32 and Arduino This book is about developing apps for Android compatible mobile devices using the MIT App Inventor online development environment. MIT App Inventor projects can be in either standalone mode or use an external processor. In standalone mode, the developed application runs only on the mobile device (e.g. Android). In external processor-based applications, the mobile device communicates with an external microcontroller-based processor, such as Raspberry Pi, Arduino, ESP8266, ESP32, etc. In this book, many tested and fully working projects are given both in standalone mode and using an external processor. Full design steps, block programs, circuit diagrams, QR codes and full program listings are given for all projects. The projects developed in this book include: Using the text-to-speech component Intonating a received SMS message Sending SMS messages Making telephone calls using a contacts list Using the GPS and Pin-pointing our location on a map Speech recognition and speech translation to another language Controlling multiple relays by speech commands Projects for the Raspberry Pi, ESP32 and Arduino using Bluetooth and Wi-Fi MIT APP Inventor and Node-RED projects for the Raspberry Pi The book is unique in that it is currently the only book that teaches how to develop projects using Wi-Fi and Node-RED with MIT App Inventor. The book is aimed at students, hobbyists, and anyone interested in developing apps for mobile devices. All projects presented in this book have been developed using the MIT App Inventor visual programming language. There is no need to write any text-based programs. All projects are compatible with Android-based mobile devices. Full program listings for all projects as well as detailed program descriptions are given in the book. Users should be able to use the projects as they are presented, modifying them to suit their own needs.

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This book is intended as a highly-practical guide for Hobbyists, Engineers and Scientists wishing to build measurement and control systems to be controlled by a local or remote Personal Computer running the Linux operating system. Both hardware and software aspects of designing typical embedded systems are covered in detail with schematics, code listings and full descriptions. Numerous examples have been designed to show clearly how straightforward it can be to create the interfaces between digital and analog electronics, with programming techniques for creating control software for both local and remote systems. Hardware developers will appreciate the variety of circuits, including a novel, low cost modulated wireless link and will discover how using Matlab® overcomes the need for specialist programming skills. Software developers will appreciate how a better understanding of circuits plus the freedom offered by Linux to directly control at the register level enables them to optimize related programs. There is no need to buy special equipment or expensive software tools in order to create embedded projects covered in this book. You can build such quality systems quickly using popular low-cost electronic components and free distributed or low-cost software tools. Some knowledge of basic electronics plus the very basics of C programming only is required. Many projects in this book are developed using Matlab® being a very popular worldwide computational tool for research in engineering and science. The book provides a detailed description of how to combine the power of Matlab® with practical electronics. With an emphasis on learning by doing, readers are encouraged by examples to program with ease; the book provides clear guidelines as to the appropriate programming techniques “on the fly”. Complete and well-documented source code is provided for all projects. If you want to learn how to quickly build Linux-based applications able to collect, process and display data on a PC from various analog and digital sensors, how to control circuitry attached to a computer, then even how to pass data via a network or control your embedded system wirelessly and more – then this is the book for you! Features of this Book Use the power, flexibility and control offered only by a Linux operating system on a PC. Use a free, distributed downloadable GNU C compiler Use (optional) a low-cost Student Version of Matlab®. Use low-cost electronic sub-assemblies for projects. Improve your skills in electronics, programming, networking and wireless design. A full chapter is dedicated to controlling your sound card for audio input and output purposes. Program sound using OSS and ALSA. Learn how to combine electronic circuits, software, networks and wireless technologies in the complete embedded system.

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This book is about teaching the Python programming language using the Raspberry Pi 4 computer. The book makes an introduction to Raspberry Pi 4 and then teaches Python with the topics: variables, strings, arrays, matrices, tuples, lists, dictionaries, user functions, flow of control, printing, keyboard input, graphics, GUI, object oriented programming and many more topics. The book is aimed for beginners, students, practising engineers, hobbyists, and for anyone else who may want to learn to program in Python. The book includes many example programs and case studies. All the example programs and case studies have been tested fully by the author and are all working. The example programs aim to teach the various programming concepts of Python. The case studies cover the use of Python in the analysis and design of electronic circuits. Some of the case study topics are: Resistor colour code identification Resistive potential divider circuits Resistive attenuator design Zener diode voltage regulator design RC and RLC transient circuits Circuit frequency response Saving data on external memory stick Mesh and node circuit analysis using matrices Resonance in RLC circuits Transistor Biasing analysis Transistor amplifier design Design of active filters Interfacing hardware with GPIO, I²C and SPI Using Wi-Fi with Python and TCP/IP and UDP programs Using Bluetooth from Python Full program listings of all the programs used in the book are available at the Elektor website of the book. Readers should be able just to copy and use these programs in their Raspberry Pi projects without any modifications.

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in 10 captivating lessons Using the lessons in this book you learn how to program a microcontroller. You’ll be using JAL, a free but extremely powerful programming language for PIC microcontrollers, which enjoys great popularity in the hobby world. Starting out from scratch virtually, you slowly build up the knowledge. No previous knowledge is needed: anyone can get started with this book. Assuming you have absorbed all lessons – meaning you have actually completed all the exercises – you should be confident to write PIC microcontroller programs, as well as read and understand programs written by other people. JAL commands You learn the function of JAL commands such as include, pin, delay, forever loop, while loop, case, exit loop, repeat until, if then, as well as the use of functions, procedures and timer- and port interrupts. JAL programs You make an LED blink, build a time switch, measure a potentiometer’s wiper position, produce sounds, suppress contact bounce, and control the brightness of an LED. And of course you learn to debug, meaning: how to spot and fix errors in your programs. Hardware You learn to recognize various components including the PIC microcontroller, potentiometer and quartz crystal, and how to wire up a PIC microcontroller and effectively link it to your PC. A breadboard is used for the purpose, allowing you to easily modify the component arrangement for further experimenting. The companion software with this book can be downloaded free of charge, including the JAL programming language. In addition, you may order a kit of parts so you don’t have to go shopping for the required components. Especially for a beginner, this is the easiest way to start with this unique pastime. Having finished this book does not mean you are through with your pastime. You can get your hands dirty again, and if desired use other books packed with fun projects using the JAL programming language. More information may be found at the end of the lessons in the chapter "Done! What’s next?""

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