Zoekresultaten voor "elektor OR magazine OR en OR may OR june OR 2017 OR pdf"

Ook in deze tijd klinken buizenversterkers nog steeds fantastisch, misschien wel mooier dan ooit. Nu hebben we immers de beschikking over moderne materialen als ringkern uitgangstransformatoren, uiterst hoogwaardige weerstanden en condensatoren en vele soorten goed klinkend draad. Ook de moderne geluidsbronnen als de CD speler en de nieuwste hoogwaardige luidsprekers laten beter dan ooit horen hoe goed de buizenversterker weergeeft. Dit boek van Menno van der Veen kijkt niet alleen theoretisch naar buizenversterkers, maar vooral ook naar de ontwerpfase waarin besluiten moeten worden genomen over de doelen en eisen van de versterker. Hoe hangen deze samen met subjectieve en objectieve criteria? Welke schakelingen klinken vooral prachtig en waarom doen ze dat? Stel dat je een versterker gaat ontwikkelen en in de handel wilt brengen, tegen welke problemen loop je dan aan? En wat te zeggen van het belang en de betekenis van metingen? Zeggen ze nu iets of zeggen ze niets? Dankzij de grote rekenkracht van de computer kunnen we tegenwoordig dieper meten dan ooit. Hoe pas je deze technieken toe bij buizenversterkers? Tot nu toe waren metingen over frequentiebereik en vermogen en vervorming voldoende om een beeld van de eigenschappen van een versterker te geven. Maar zijn zulke metingen voldoende of moeten we gaan meten zoals ons oor waarneemt, met echte muzieksignalen in plaats van meettoontjes? De auteur schetst een toekomst waarbij meten aan de versterker de eigenschappen van ons horen moet volgen om tot nieuwe inzichten te komen. Dit boek is meer op de praktijk gericht dan op de theorie en heeft een beschouwend karakter, alsof de auteur van bovenaf naar de buizenversterker kijkt. Kenniselementen worden geïntegreerd en in een breed overzichtelijk kader geplaatst.

Lees (+) (–)

A Small Basic Approach There are many different PC programming languages available on the market. Some have beautiful names; some have easy to use development tools. Others have incredible power. They all have one thing in common: they assume that you have, or want to have, a knack for technology and difficult to read commands. In this book we take a practical approach to programming. We assume that you simply want to write a PC program, and write it quickly. Not in a professional environment, not in order to start a new career, but for plain and simple fun... or just to get a task done. Therefore we use Small Basic. You will have an application up and running in a matter of minutes. You will understand exactly how it works and be able to write text programs, graphical user interfaces, and advanced drivers. It is so simple; you don't even need to be an adult!

Lees (+) (–)

Microcontrollers have become an indispensable part of modern electronics. They make things possible that vastly exceed what could be done previously. Innumerable applications show that almost nothing is impossible. There’s thus every reason to learn more about them, but that raises the question of where to find a good introduction to this fascinating technology. The answer is easy: this Microcontroller Basics book, combined with the 89S8252 Flash Board project published by Elektor Electronics. However, this book offers more than just a basic introduction. It clearly explains the technology using various microcontroller circuits and programs written in several different programming languages. Three microcontrollers from the 8051 family are used in the sample applications, ranging from the simple 89C2051 to the AN2131, which is designed to support USB applications. The programming tools include assemblers, Basic-52 and BASCOM-51, and several C compilers. Every reader can thus find the programming environment most suitable to his or her needs. In the course of the book, the reader gradually develops increased competence in converting his or her ideas into microcontroller circuitry. All of the sample programs can be downloaded from the Elektor Electronics website or the author’s website. That has the added advantage that the latest versions are always available.

Lees (+) (–)

If you enjoy DIY electronics, projects, software and robots, you’ll find this book intellectually stimulating and immediately useful. With the right parts and a little guidance, you can build robot systems that suit your needs more than overpriced commercial systems can. 20 years ago, robots based on simple 8-bit processors and touch sensors were the norm. Now, it’s possible to build multi-core robots that can react to their surroundings with intelligence. Today’s robots combine sensor readings from accelerometers, gyroscopes and computer vision sensors to learn about their environments. They can respond using sophisticated control algorithms and they can process data both locally and in the cloud. This book, which covers the theory and best practices associated with advanced robot technologies, was written to help roboticists, whether amateur hobbyist or professional, take their designs to the next level. As will be seen, building advanced applications does not require extremely costly robot technology. All that is needed is simply the knowledge of which technologies are out there and how best to use each of them. Each chapter in this book will introduce one of these different technologies and discuss how best to use it in a robotics application. On the hardware side, we’ll cover microcontrollers, servos, and sensors, hopefully inspiring you to design your own awe-inspiring, next-generation systems. On the software side, we’ll cover programming languages, debugging, algorithms, and state machines. We’ll focus on the Arduino, the Parallax Propeller, Revolution Education PICAXE and projects I’ve with which I’ve been involved, including the TBot educational robot, the PropScope oscilloscope, the 12Blocks visual programming language, and the ViewPort development environment. In addition, we’ll serve up a comprehensive introduction to a variety of essential topics, including output (e.g. LEDs, servo motors), and communication technologies (e.g. infrared, audio), that you can use to develop systems that interact to stimuli and communicate with humans and other robots. To make these topics as accessible as possible, handy schematics, sample code and practical tips regarding building and debugging have been included. Hanno Sander Christchurch, New Zealand

Lees (+) (–)

Mikrocontroller-Basics mit PIC (E-book)

Lees (+) (–)

Entièrement mise à jour pour le Raspberry Pi 5 Raspberry Pi 5 est un petit ordinateur intelligent, de construction britannique qui regorge de potentiel. Fabriqué à l'aide d'un processeur économe en énergie, le Raspberry Pi est conçu pour vous aider à apprendre le codage, découvrir comment fonctionne un ordinateur et construire vos propres projets uniques et incroyables. Ce guide est conçu pour vous montrer à quel point il est facile de démarrer. Apprendre à : Configurez votre Raspberry Pi, installez son système d'exploitation, et commencez à utiliser cet ordinateur entièrement fonctionnel. Commencez à coder des projets, avec des guides étape par étape utilisant les langages de programmation Scratch 3, Python et MicroPython. Expérimentez en connectant des composants électroniques, et amusez-vous à créer des projets incroyables. Nouveauté de la 5ème édition : Mise à jour pour les derniers ordinateurs Raspberry Pi : Raspberry Pi 5 et Raspberry Pi Zèro 2 W. Couvre le dernier système d'exploitation Raspberry Pi. Comprend un nouveau chapitre sur le Raspberry Pi Pico ! Téléchargements GitHub

Lees (+) (–)

The Internet of Things is rapidly gaining interest, and that has fueled the development of the Edison. A tiny computer, the size of a postage stamp, with a lot of power and built-in wireless communication capabilities. In this eBook we will help you get up-to-speed with the Edison, by installing the software both on the Edison as well as on your Windows PC. We will use the Edison Arduino break-out board because it is easy to work with. We will discuss Linux, Arduino C++ and Python, and show examples of how the Edison can interface with other hardware. We will use Wi-Fi and Bluetooth to set up wireless connections, and show you a trick to program sketches over Wi-Fi. Once you have completed this book your Edison will be up and running with the latest software version, and you will have sufficient knowledge of both hardware and software to start making your own applications. You will even be able to program the Edison over USB and wireless both in Arduino C++ and Python. This is not a projects eBook, but a toolbox that will allow you to explore the wonderful world of the Intel Edison!

Lees (+) (–)

Secure, Modular, Open-Source and Self-Sufficient Ever since the Raspberry Pi was introduced, it has been used by enthusiasts to automate their homes. The Raspberry Pi is a powerful computer in a small package, with lots of interfacing options to control various devices. This book shows you how you can automate your home with a Raspberry Pi. You’ll learn how to use various wireless protocols for home automation, such as Bluetooth, 433.92 MHz radio waves, Z-Wave, and Zigbee. Soon you’ll automate your home with Python, Node-RED, and Home Assistant, and you’ll even be able to speak to your home automation system. All this is done securely, with a modular system, completely open-source, without relying on third-party services. You’re in control of your home, and no one else. At the end of this book, you can install and configure your Raspberry Pi as a highly flexible home automation gateway for protocols of your choice, and link various services with MQTT to make it your own system. This DIY (do it yourself) approach is a bit more laborious than just installing an off-the-shelf home automation system, but in the process, you can learn a lot, and in the end, you know exactly what’s running your house and how to tweak it. This is why you were interested in the Raspberry Pi in the first place, right? Turn your Raspberry Pi into a reliable gateway for various home automation protocols. Make your home automation setup reproducible with Docker Compose. Secure all your network communication with TLS. Create a video surveillance system for your home. Automate your home with Python, Node-RED, Home Assistant and AppDaemon. Securely access your home automation dashboard from remote locations. Use fully offline voice commands in your own language. Download the software and view the errata for the book on GitHub.

Lees (+) (–)