Search results for "elektor or magazine or en or may or june or 2017 or pdf"

Stromversorgungen in der Praxis (E-book)

Read (+) (–)

Program, build, and master 60+ projects with the Wireless RP2040 The Raspberry Pi Pico and Pico W are based on the fast, efficient, and low-cost dual-core ARM Cortex M0+ RP2040 microcontroller chip running at up to 133 MHz and sporting 264 KB of SRAM and 2 MB of Flash memory. Besides spacious memory, the Pico and Pico W offer many GPIO pins, and popular peripheral interface modules like ADC, SPI, I²C, UART, PWM, timing modules, a hardware debug interface, and an internal temperature sensor. The Raspberry Pi Pico W additionally includes an on-board Infineon CYW43439 Bluetooth and Wi-Fi chipset. At the time of writing this book, the Bluetooth firmware was not yet available. Wi-Fi is however fully supported at 2.4 GHz using the 802.11b/g/n protocols. This book is an introduction to using the Raspberry Pi Pico W in conjunction with the MicroPython programming language. The Thonny development environment (IDE) is used in all of the 60+ working and tested projects covering the following topics: Installing the MicroPython on Raspberry Pi Pico using a Raspberry Pi or a PC Timer interrupts and external interrupts Analogue-to-digital converter (ADC) projects Using the internal temperature sensor and external sensor chips Using the internal temperature sensor and external temperature sensor chips Datalogging projects PWM, UART, I²C, and SPI projects Using Bluetooth, WiFi, and apps to communicate with smartphones Digital-to-analogue converter (DAC) projects All projects are tried & tested. They can be implemented on both the Raspberry Pi Pico and Raspberry Pi Pico W, although the Wi-Fi-based subjects will run on the Pico W only. Basic programming and electronics experience are required to follow the projects. Brief descriptions, block diagrams, detailed circuit diagrams, and full MicroPython program listings are given for all projects.

Read (+) (–)

LoRaWAN, Sigfox, NB-IoT & LTE-M Compared The Internet of Things depends on a critical question. How do you connect devices that must operate for years on tiny batteries, often miles from the nearest power outlet? This Elektor Technical Brief provides a practical guide to the technologies that have become the backbone of long-range, low-power IoT connectivity. Compiled by the Elektor Content Team, this concise technical brief examines the real engineering tradeoffs behind today’s leading Low-Power Wide-Area Network (LPWAN) technologies: LoRaWAN, Sigfox, NB-IoT, and LTE-M. By referencing a wide range of Elektor articles and other online content, this document explains why link budget, noise, bandwidth, and power consumption ultimately determine system performance. From there, it explores the architectures, strengths, limitations, and deployment realities of each major LPWAN technology, helping you understand not just how they work, but when and why to use them. Whether you’re designing smart meters, industrial sensors, agricultural monitoring systems, asset trackers, or connected infrastructure, this guide provides the insights needed to make informed connectivity decisions. Along the way, you’ll discover: Why LPWAN technologies emerged and where they fit in the IoT landscape The RF fundamentals that drive range, reliability, and battery life Details about LoRaWAN, Sigfox, NB-IoT, and LTE-M Practical comparisons of power, coverage, latency, cost, and deployment models Guidance for selecting the right LPWAN technology for your application Emerging trends shaping the future of long-range IoT connectivity Clear, accessible, and grounded in real engineering practice, this Technical Brief helps you move beyond specifications and marketing claims to understand what matters most. If you’re building connected products that need to survive in the field — not just in the lab — this is the LPWAN guide you’ll want at your side. Elektor helped launch the first wave of electronics makers in 1961. Since then, our global community has grown by hundreds of thousands of active members (comprising professional engineers, makers, and students) and more than 500 contributing experts. Every day, we inspire members to design and earn money with electronics.

Read (+) (–)

Computer Vision (DE) PDF

Read (+) (–)

Schrittweise Einführung in das praktische Schaltungsdesign Der Einstieg in die Elektronik ist nicht so schwierig, wie man vielleicht denkt. Mit diesem Buch werden die wichtigsten Konzepte der Elektrotechnik und Elektronik auf spielerische Weise erkundet, indem verschiedene Experimente durchgeführt und Schaltungen simuliert werden. Es vermittelt Elektronik praxisnah, ohne in komplexen Fachjargon oder lange Berechnungen einzutauchen. Dadurch werden schon bald eigene Projekte ermöglicht. Es sind keine Vorkenntnisse in Elektronik erforderlich; lediglich einige grundlegende Algebra-Kenntnisse werden in wenigen einfachen Berechnungen verwendet. Viele getestete und funktionierende Projekte und Simulationen werden vorgestellt, um mit dem Aufbau elektronischer Schaltungen vertraut zu werden. Für problemloses Experimentieren – ohne die Gefahr, etwas zu beschädigen – werden zudem frühzeitig auch softwarebasierte Schaltungssimulationen vorgestellt. Lernziele: Konzepte von Spannung, Strom und Leistung Wechselstrom (AC) und Gleichstrom (DC) Grundlegende Lampenschaltungen mit Schaltern Passive Bauteile: Widerstände, Kondensatoren und Induktivitäten RC- und RCL-Schaltungen und Elektromagnetismus Lautsprecher, Relais, Summer und Transformatoren Aktive Bauteile: Dioden und LEDs, Bipolartransistoren und MOSFETs Transistorbasierte Schaltungen Optokoppler-Schaltungen Astabile und monostabile Multivibratoren Verwendung des 555-Timer-ICs Operationsverstärkertechnik Digitale Logik Beispiele: Verstärker, Oszillatoren, Filter und Sensoren Test- und Messwerkzeuge Mikrocontroller: Arduino Uno, ESP32, Raspberry Pi Pico und Raspberry Pi Datenblätter lesen und Auswahl von Komponenten EMV & EMI sowie Normen & Vorschriften

Read (+) (–)

From Theory to Practical Applications in Wireless Energy Transfer and Harvesting Wireless power transmission has gained significant global interest, particularly with the rise of electric vehicles and the Internet of Things (IoT). It’s a technology that allows the transfer of electricity without physical connections, offering solutions for everything from powering small devices over short distances to long-range energy transmission for more complex systems. Wireless Power Design provides a balanced mix of theoretical knowledge and practical insights, helping you explore the potential of wireless energy transfer and harvesting technologies. The book presents a series of hands-on projects that cover various aspects of wireless power systems, each accompanied by detailed explanations and parameter listings. The following five projects guide you through key areas of wireless power: Project 1: Wireless Powering of Advanced IoT Devices Project 2: Wireless Powered Devices on the Frontline – The Future and Challenges Project 3: Wireless Powering of Devices Using Inductive Technology Project 4: Wireless Power Transmission for IoT Devices Project 5: Charging Robot Crawler Inside the Pipeline These projects explore different aspects of wireless power, from inductive charging to wireless energy transmission, offering practical solutions for real-world applications. The book includes projects that use simulation tools like CST Microwave Studio and Keysight ADS for design and analysis, with a focus on practical design considerations and real-world implementation techniques.

Read (+) (–)

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.

Read (+) (–)

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.

Read (+) (–)

Mastering the Language and the Development Platform Many people would like to learn Java but getting started is not easy since programming with Java requires at least two things: mastering the programming language and the development environment. With the help of many examples, this book shows how the language is structured. In addition, it employs the Eclipse development environment as an example of a powerful tool to teach developing Java programs. In Basics, the first part of the book, you acquire your Java and Eclipse basic knowledge. This part lays the programming foundations, gives you an overview of Java technology, and shows you what is special about object-oriented programming. In the second part called Java Language, everything revolves around the subtleties of the Java language and this is where the first small Java applications are created, aided by a fine blend of the knowledge part and practical exercises. Java Technology is both the name and the focus of the third part which also introduces you to the rules to observe when programming, what class libraries are and what advantages they have. In addition, you will learn how to test programs, what algorithms are, and how to program them. The fourth part, Java Projects, enables you to apply all the previous elements in an application with a graphical user interface. The project shows how to develop a larger application piece by piece with the Eclipse development environment. The Appendix concludes with a section on frequent errors that can occur when working with Eclipse, and a Glossary.

Read (+) (–)

Schaltungen, Software und Empfangspraxis Die Kurzwellen-Empfangstechnik entwickelt sich ständig weiter. Im Mai 2007 wurde von Elektor das "Software Defined Radio mit USB-Schnittstelle" vorgestellt. Ziel war ein möglichst einfacher Empfänger, der durch den Einsatz geeigneter Software überzeugende Empfangsergebnisse liefert. Die benötigten Programme stehen auf der Elektor-Website und im Internet gratis zur Verfügung. Schon nach wenigen Monaten hatte dieser neue Empfänger eine weite Verbreitung gefunden. Zahlreiche Software-Autoren unterstützten das Projekt. Auch Bedienungshinweise, Erweiterungen sowie Tipps und Tricks findet man im Netz. Die Vielfalt der Möglichkeiten erschwert die Orientierung. Deshalb wurde dieses Buch geschrieben. Das Ziel ist ein Überblick über Aufbau, Software und Bedienung des SDR. Außerdem werden Selbstbauprojekte vorgestellt, die es erlauben, mit geringsten Kosten eigene Empfänger zu entwerfen; denn das Thema entwickelt sich laufend weiter...

Read (+) (–)

Modelle für 3D-Druck, CNC-Fräsen, Prozesskommunikation und Dokumentation erstellen Das Design dreidimensionaler Modelle mit Werkzeugen wie Blender oder 3D Studio Max ist eine Aufgabe, die ingenieurwissenschaftlich begabte Personen nur allzu gern delegieren. OpenSCAD wählt einen erfrischend anderen Zugang. Anstatt ein Objekt als Punktwolke zu betrachten, schreibt der Modellerzeuger in einer an JavaScript erinnernden Sprache ein Programm. Dieses beschreibt die zu erzeugende Geometrie als eine Serie von Arbeitsschritten. Dreidimensionale Modelle entstehen so in einem Workflow, der an die Entwicklung klassischer ingenieurwissenschaftliche Güter erinnert. Wegen der Nähe zur manuellen Fertigung mit Werkzeug ist das ein Prozess, der Ingenieuren gut in die Hände spielt. Aber Achtung: trotz der Einfachheit der Syntax ist OpenSCAD kein primitives Modellierungsprogramm. Umfangreiche Scriptingmöglichkeiten sorgen dafür, dass sich die Modelle dynamisch an geänderte Situationen anpassen. Dieses Lehrbuch demonstriert die Möglichkeiten von OpenSCAD anhand praktischer Beispiele. Freuen Sie sich auf Ersatzknöpfe für ein LeCroy-Oszilloskop, Garderobenstangenhalter, einen Halter für Seifenspender und diverse andere Beispiele aus dem realen Leben. Der mit mehr als 15 Dienstjahren Erfahrung ausgestattete Autor entwickelte dieses für Linux und Windows gleichermaßen geeignete Buch explizit für informatikaffine Personen. Wenn Sie mit irgendeiner Programmiersprache Erfahrung haben, ist dieses Buch ihr Weg zum schnellen und unbürokratischen Erzeugen dreidimensionaler Modelle.

Read (+) (–)

AI Projects for the Raspberry Pi with the AI HAT+ Edge AI is transforming everyday devices by putting intelligence where it matters most: directly inside the hardware. With on-device inference, a camera can recognize a visitor instantly, a phone can translate speech without streaming audio to the cloud, and a wearable can detect anomalies in real time—fast, private, and reliable even when the network disappears. This book is your practical guide to building exactly those kinds of systems with the Raspberry Pi AI HAT+ and the Hailo-8L accelerator. You’ll start with clear foundations: core AI and machine-learning concepts, how neural networks work, and what truly distinguishes Edge AI from cloud AI—plus an honest look at ethical considerations and future impacts. Then it’s straight to hands-on physical computing. Step by step, you’ll set up Raspberry Pi OS, power and cooling, and develop in Python using the Thonny IDE. You’ll learn GPIO basics with lights and servos, mount the AI HAT+ hardware, install and verify the Hailo software stack, and connect the right camera—official modules or USB webcams, even multiple cameras. From your first pipeline to real projects, you’ll run person detection, pose estimation, segmentation, and depth estimation, then level up with YOLO object detection: smart alerts, guest counters, and custom extensions. You’ll even connect vision to motion by combining gesture recognition with servo-driven mechanisms, including a robotic arm. With troubleshooting tips, hardware essentials, and a practical Python refresher, this book turns Edge AI from buzzword into buildable reality.

Read (+) (–)