Résultats de la recherche pour "electronic OR security OR and OR espionage"

A Handbook on DIY Nowadays, security problems are rarely properly solved or correctly addressed. Electronic security is only part of the chain in making a system secure. Electronic security is usually addressed as network or software security, neglecting other aspects, but the chain is only as strong as its weakest link. This book is about electronic hardware security, with an emphasis on problems that you can solve on a shoestring DIY budget. It deals mostly with secure communications, cryptosystems, and espionage. You will quickly appreciate that you can’t simply buy a trustworthy and reliable cryptosystem off the shelf. You will then realise that this applies equally to individuals, corporations, and governments. If you want to increase your electronic security awareness in a world already overcrowded with networks of microphones and cameras, this is a book for you. Furthermore, if you want to do something DIY by designing and expanding upon simple electronic systems, please continue reading. Some of the devices described are already published as projects in the Elektor magazine. Some are still ideas yet to be worked out. Complexity is the main enemy of security, so we'll try to keep to simple systems. Every chapter will analyse real-life espionage events or at least several hypothetical scenarios that will hopefully spark your imagination. The final goal is to build a security-conscious mindset (or “to get into a head of a spy”) which is necessary to recognise possible threats beforehand, to design a truly secure system. Don’t bother reading if: you think you and your secrets are 100% safe and secure you think somebody else can effectively handle your security you think conspiracy theories only exist in theory – Telefunken’s masterpiece the “FS-5000 Harpoon” was built on one!

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This electronic dice with 7 red LEDs rolls when the push button is released and works with a 9 V battery (not included). Downloads Manual

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Space, the final frontier, will become more and more popular. The space industry is continually growing and new products and services will be required. Innovation is needed for the development of this industry. Today it is no longer possible to follow all the events in field of space. The space market is growing and activities are increasing, especially the market for small-satellites. This book wants to help close the gap and encourage electronic engineers to enter into the fascinating field of space electronics. One of the main difficulties is finding people with knowledge of space electronics design. Nowadays companies have to invest a lot of time and resources to instruct electronic engineers with no experience of space. Only a brief and basic introduction of this topic is typically achieved at university in space engineering lectures. Professionals with practical experience and the necessary theoretical knowledge are scarce. Companies from the space sector are searching for staff with knowledge of space electronics. This book will bring space closer aspiring to the space electronic hobbyists.

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Analogue Electronics and Microcontrollers Projects Hobbyist electronics can be a fun way to learn new skills that can be helpful to your career. Those who understand the basics of electronics can design their own circuits and projects. However, before you run, you need to learn to walk. It all starts with analogue electronics. You should be familiar with the simple components and circuits and understand their basic behaviors and the issues you may encounter. The best way to do this is through real experiments. Theory alone is not enough. This book offers a large number of practical entry-level circuits, with which everyone can gain the basic experience. Through the widespread introduction of microcontrollers, a new chapter in electronics has begun. Microcontrollers are now performing more and more tasks that were originally solved using discrete components and conventional ICs. Starting out has become easier and easier thanks to platforms including Bascom, Arduino, micro:bit. The book introduces numerous manageable microcontroller applications. It’s now a case of less soldering and more programming.

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Maîtrisez l'électronique numérique – de manière pratique ! Cette offre groupée comprend le livre Learning Digital Electronics, qui contient plus de 20 projets pratiques en logique et conception de circuits, ainsi qu'un kit de démarrage de 100 pièces pour vous permettre de commencer immédiatement à construire des circuits logiques, des compteurs, des afficheurs et bien plus encore. Learning Digital Electronics (livre) Ce livre est un guide pratique de l'électronique numérique, couvrant les composants essentiels des systèmes numériques modernes : systèmes numériques, portes logiques, algèbre booléenne, logique combinatoire et séquentielle, et bien plus encore. Grâce à plus de 20 projets structurés, vous concevrez et construirez des systèmes numériques à l'aide de composants concrets tels que des portes logiques, des multiplexeurs, des décodeurs, des bascules, des compteurs et des registres à décalage. Les projets vont des circuits logiques LED de base aux serrures numériques, en passant par les systèmes d'affichage, les contrôleurs de feux de circulation et les conceptions basées sur la temporisation. Certains projets introduisent l'utilisation d'outils tels que CircuitVerse pour la simulation de circuits, tandis que plusieurs conceptions utilisent des dispositifs logiques de la série 74HC, couramment utilisés dans le prototypage de matériel numérique. Vous trouverez à l'intérieur : Une couverture claire des systèmes numériques et de l'arithmétique binaire Les fondamentaux des portes logiques et leur implémentation universelle Des projets pas à pas utilisant des bascules, des compteurs et des registres Une conception concrète avec des puces logiques de la série 74HC Des techniques de conception de systèmes combinatoires et séquentiels Ce livre adopte une approche de l'électronique numérique axée sur la conception et l'application, construite autour de circuits fonctionnels, d'une logique testée et d'expérimentations pratiques. Learning Digital Electronics (kit) Ce kit a été spécialement développé pour compléter le livre « Learning Digital Electronics ». Tous les composants nécessaires étant inclus, vous pouvez réaliser directement chaque projet pratique du livre. Contenu du kit 2x Puces de porte ET 74HC08 2x Puces de porte NAND 74HC00 1x Puce de porte XOR 74HC86 1x Puce de temporisation 555 1x Puce de compteur 74HC161 1x Registre à décalage 74HC164 1x Décodeur 7 segments CD4511 1x Bascule JK CD4027 1x Transistor NPN BC337 1x Afficheur 7 segments à cathode commune KPS-5161 1x Résistance photosensible (LDR) 4x Résistances de 10 KΩ 8x Résistances de 1 KΩ 2x Résistances de 47 KΩ 1x Résistance de 100 KΩ 4x Résistances de 2,7 KΩ 1x Résistance de 5,6 KΩ 1x Résistance de 150 KΩ 1x Condensateur de 10 μF 2x Condensateurs de 0,01 μF 2x Condensateurs de 100 nF 8x Petites LED rouges 1x Petite LED verte 1x Petite LED orange 4x Interrupteurs à bouton-poussoir 1x Actif Buzzer 1x Support de piles pour 3 piles AA (piles non incluses) 1x Plaque d'essai 40x Câbles de connexion mâle-mâle (longueur : 200 mm)

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This book contains more than 400 simple electronic circuits which are developed and tested in practice by the authors. The technical solutions presented in the book are intended to stimulate the creative imagination of readers and broaden their area of thought. This should allow readers to look beyond the horizons of possibilities and use ordinary electronic items in a new way. This book includes new and original radio electronic multipurpose circuits. The chapters of the book are devoted to power electronics and measuring equipment and contain numerous original circuits of generators, amplifiers, filters, electronic switches based on thyristors and CMOS switch elements. Wired and wireless systems as well as security and safety systems are presented. Due to the high relevance and increased interest of readers in little-known or not readily available information, the different chapters of this book describe the use of electronic devices in industrial electronics and for research, as well as new instruments and equipment for medical use, gas-discharge and Kirlian photography. A number of technical devices presented in this book are related to research of the mysteries of the earth, nature and human beings by using radio electronic devices. This book will be useful for both radio amateurs and professionals.

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The Christmas tree with flashing LEDs takes the coziness of Christmas to a new level! With 16 flashing LEDs, this green Christmas tree creates a warm atmosphere. With very low power consumption and the option to be powered by a 9-volt battery (not included), this Christmas decoration is easy to use. Enjoy the holidays with this atmospheric addition to your decoration collection. Downloads Manual

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Practical Introduction to 3D Modeling from Enclosure to Front Panel Embedding a vintage component, creating a professional looking home for a circuit board, or even designing a complex apparatus complete with a chassis – these and many other challenges turn into a stimulating pleasure with FreeCAD. Once you have internalized the basic processes, there are virtually no limits to your imagination. Starting to use a new software is never straightforward – especially with a tool as versatile as FreeCAD. Manageable, but at the same time easily usable individual components provide the starting point in this book. Putting these components together later results in assemblies. In the FreeCAD universe, a workable trajectory is demonstrated. The described procedure is illustrative so the examples are easily applied to custom tasks. The devices were made by the author and illustrated with photos. Creating a 3D design is requiring some effort but the initial investment pays off soon. Besides the impressive spatial representation of the projects, the extracted drawings yield a solid base for documentation and production. Extended FreeCAD capabilities like the unfolding of sheet metal parts enormously add to efficiency and pushes models forward into practical assembly. Soon you will definitely not want to do without FreeCAD!

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Learning circuit design the fun way Welcome to the world of electronics! Getting started in electronics is not as difficult as you may think. Using this book, you will explore and learn the most important electrical and electronics engineering concepts in a fun way by doing various experiments and by simulating circuits. It will teach you electronics practically without getting into complex technical jargon and long calculations. As a result, you will be creating your own projects soon. No prior knowledge of electronics is required, only some basic algebra is used in a few simple calculations. Many tested and working projects and simulations are presented to familiarise yourself with the construction of electronic circuits. Circuit simulation is introduced at an early stage to enable you to experiment with circuits easily without breaking anything. You will learn: The concepts of voltage, current, and power AC and DC Basic lamp circuits with switches Passive components: resistors, capacitors & inductors RC & RCL circuits Electromagnetism Loudspeakers, relays, buzzers, and transformers Active components: diodes & LEDs, bipolar transistors & MOSFETs Transistor-based switching circuits Optocoupler circuits Astable & monostable multivibrators Using the 555 timer IC The operational amplifier Digital logic Advanced examples: amplifiers, oscillators, filters, and sensors Test and measurement tools Microcontrollers: Arduino UNO, ESP32, Raspberry Pi Pico, and Raspberry Pi Reading datasheets and best practices for selecting components EMC & EMI and norms & regulations

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Projets avec Arduino, ESPHome, Home Assistant, et Raspberry Pi & Co. Ce livre électronique contient plusieurs exemples de projets, en commençant par une introduction à l'électronique. Il explique également comment installer Home Assistant sur un Raspberry Pi, comment utiliser des capteurs de climat intérieur pour la température et l'humidité, comment mettre en œuvre le protocole MQTT et d'autres interfaces, et comment utiliser ESPHome pour intégrer des capteurs et des actionneurs dans Home Assistant. De nombreux tutoriels vidéo complètent le livre. Fundamentals of electrical engineering The book begins with an introduction to electrical engineering. You will learn the basics of voltage, current, resistors, diodes and transistors. Arduino and microcontrollers A complete section is dedicated to the Arduino Uno. You will get to know the structure, write your first programs and work on practical examples. Home Assistant and automation You will learn how to set up Home Assistant on a Raspberry Pi and how to use automations, scenes and devices. In addition, Zigbee, MQTT and ESP-NOW – important technologies for home automation – will be discussed. ESP8266, ESP32 and ESP32-CAM The popular ESP microcontrollers are covered in detail. A theoretical introduction is followed by practical projects that show you how to get the most out of these devices. Sensors and actuators The book explains the functionality and application of numerous sensors such as temperature and humidity sensors, motion detectors and RFID readers. For actuators, stepper motors, e-ink displays, servo motors and much more are covered. There are practical application examples for all devices. ESPHome This chapter shows you how to integrate sensors and actuators into Home Assistant without any programming effort. You will be guided step by step through the setup with ESPHome. LEDs and lighting technology In this chapter, you will learn about different types of LEDs and how they can be used. The basics of lighting technology are also explained. Node-RED A whole chapter is dedicated to Node-RED. You will learn the basics of this powerful tool and be guided step by step through its setup and use. Integrated Circuits (ICs) In electronics, there are numerous ICs that make our lives easier. You will get to know the most important ones and apply your knowledge in practical projects. Professional programming Advanced topics such as the correct use of buttons, the use of interrupts and the use of an NTP server for time synchronisation are covered in detail in this chapter. Downloads GitHub

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A Combat Guide against E-waste and Throwawayism This book is for anyone who enjoys tinkering with analog and digital hardware electronics. Regardless of the sophistication of your workspace, only basic tools are required to achieve truly satisfying results. It is intended as a reference guide among other hardware repair publications you may have in your library. However, the book goes a step further than most other repair guides in addressing issues in the modern era of discarded electronics called e-waste. E-waste should be put to good use. Producing anything new requires not just precious resources and labor, but also energy to make and deliver it to global retail shelves. Your talents and love of electronics can be put to good use by rescuing and resurrecting at least selected units from this endless stream of e-waste. Examples include either restoring through repair, or salvaging reusable electronic and mechanical components for your next project. Smart tips are provided throughout the book, and much information is tabulated for easy reference. The book expands age-old repair and hacking techniques applied for repair on the workbench into clever methods and applications to achieve effective results with discarded or “non-servicable” electronic consumer products. The final chapter provides real-life examples using all of the previously discussed content in a summarized form for each example repair type.

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Le domaine de l’électronique numérique est au cœur de la technologie moderne. Cet e-book présente les circuits fondamentaux utilisant des portes, des bascules et des compteurs de la série CMOS 4000. Chacune des 50 expériences comporte un schéma de circuit ainsi qu'une illustration détaillée de la construction du circuit sur une maquette sans soudure. Il est préférable d’apprendre ces principes fondamentaux à l’aide d’expériences pratiques. Construire ces circuits numériques améliorera vos connaissances et sera amusant en plus. La plupart des circuits présentés ici ont des applications pratiques dans la vie réelle. Avec une bonne vue d'ensemble du domaine, vous serez bien équipé pour trouver des solutions simples et rentables pour toute application. Le livre électronique s'adresse essentiellement aux étudiants, aux stagiaires et à toute personne intéressée et nécessitant une introduction à l'électronique de commande numérique. De plus, les connaissances acquises ici constituent la base de futurs projets dans le domaine des microcontrôleurs et de la programmation.

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