Zoekresultaten voor "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!

Lees meer minder

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

Lees meer minder

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.

Lees meer minder

Beheers digitale elektronica – op een praktische manier! Deze bundel bevat het boek Learning Digital Electronics met meer dan 20 praktische projecten in logica- en schakelingontwerp, evenals een 100-delige starterkit – zodat u meteen aan de slag kunt met het bouwen van logische schakelingen, tellers, displays en meer. Learning Digital Electronics (Boek) Dit boek is een praktische gids voor digitale elektronica en behandelt de essentiële componenten van moderne digitale systemen: getallensystemen, logische poorten, Booleaanse algebra, combinatorische en sequentiële logica, en meer. Via meer dan 20 gestructureerde projecten ontwerp en bouw je digitale systemen met behulp van echte componenten zoals logische poorten, multiplexers, decoders, flipflops, tellers en schuifregisters. De projecten variëren van eenvoudige LED-logicacircuits tot digitale sloten, displaysystemen, verkeerslichtcontrollers en timinggebaseerde ontwerpen. Geselecteerde projecten introduceren het gebruik van tools zoals CircuitVerse voor circuitsimulatie, terwijl verschillende ontwerpen gebruikmaken van logische componenten uit de 74HC-serie, die veel worden gebruikt bij het maken van digitale hardwareprototyping. Binnenin vindt u: Duidelijke uitleg over getallensystemen en binaire rekenkunde Fundamentele principes van logische poorten en universele poortimplementaties Stapsgewijze projecten met flipflops, tellers en registers Real-world ontwerp met 74HC-serie logische chips Technieken voor het ontwerpen van combinatorische en sequentiële systemen Dit boek hanteert een ontwerpgerichte, toepassingsgerichte benadering van digitale elektronica – opgebouwd rond werkende circuits, geteste logica en praktische experimenten. Learning Digital Electronics (Kit) Deze kit is speciaal ontwikkeld als aanvulling op het boek "Learning Digital Electronics". Omdat alle benodigde componenten zijn inbegrepen, kunt u elk praktisch project in het boek direct uitvoeren. Inhoud van de kit 2x 74HC08 EN-poortchip 2x 74HC00 NAND-poortchip 1x 74HC86 XOR-poortchip 1x 555 timerchip 1x 74HC161 tellerchip 1x 74HC164 schuifregister 1x CD4511 7-segments decoder 1x CD4027 JK flipflop 1x BC337 NPN-transistor 1x KPS-5161 7-segments gemeenschappelijke-kathodedisplay 1x lichtgevoelige weerstand (LDR) 4x 10 KΩ-weerstanden 8x 1 KΩ weerstand 2x 47 KΩ-weerstanden 1x 100 KΩ weerstand 4x 2,7 KΩ-weerstanden 1x 5,6 KΩ weerstand 1x 150 KΩ weerstand 1x 10 μF condensator 2x 0,01 μF condensator 2x 100 nF condensator 8x Kleine rode LED 1x Kleine groene LED 1x Kleine oranje LED 4x Drukknopschakelaars 1x Actieve zoemer 1x Batterijhouder voor 3x AA-batterijen (batterijen niet inbegrepen) 1x Breadboard 40x Male-to-male jumperdraden (lengte: 200 mm)

Lees meer minder

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.

Lees meer minder

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.

Lees meer minder

De werking van veruit de meeste moderne elektronische apparaten is niet slechts op één enkel principe gebaseerd. Vaak staat een of andere computer (doorgaans een microcontroller) centraal. Uit deze fundamentele opzet – een computer die is ingebed in een bepaalde toepassingsschakeling – is de algemene benaming Embedded Systems voortgekomen. De meeste van deze systemen moeten vanuit het niets worden ontwikkeld, en daarbij komt het op elk detail aan. Vindingrijkheid en veelzijdigheid zijn dan een vereiste. De problemen die opgelost moeten worden, vormen niet zelden een ware uitdaging en betreffen niet alleen de analoge en digitale elektronica maar ook de systeemarchitectuur, programmering en programma-organisatie. De delen van deze reeks zijn geschreven voor iedereen – leerling, student of beginnend elektronicus – die zich terdege wil bekwamen in de professionele hardware- en systeemontwikkeling. En ze richten zich tot de allround-elektronicus die geen tijd heeft om specialist op een van de vele deelgebieden te worden maar die weet dat hij met standaard huis-, tuin- en keukenoplossingen niet ver komt. Ze bieden wat studenten en professionele elektronici nodig hebben: een opfrissing en verdieping van de basiskennis, een bron van inspiratie en een schat aan details en spitsvondigheden.  Dit deel behandelt de passieve componenten: vaste weerstanden • instelbare weerstanden • NTC- en PTC-weerstanden • spanningsafhankelijke weerstanden • condensatoren • spoelen • transformatoren • contactelementen Andere delen in deze reeks: Digitale technieken • Hard- en software • Signaalwegen • Basisschakelingen

Lees meer minder

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

Lees meer minder

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!

Lees meer minder

With 20+ Practical Projects in Logic and Circuit Design This book is a practical guide to digital electronics, covering the essential components of modern digital systems: number systems, logic gates, Boolean algebra, combinational and sequential logic, and more. Through more than 20 structured projects, you’ll design and build digital systems using real-world components such as logic gates, multiplexers, decoders, flip-flops, counters, and shift registers. The projects range from basic LED logic circuits to digital locks, display systems, traffic light controllers, and timing-based designs. Selected projects introduce the use of tools such as CircuitVerse for circuit simulation, while several designs make use of 74HC-series logic devices, commonly used in digital hardware prototyping. Inside, you’ll find: Clear coverage of number systems and binary arithmetic Logic gate fundamentals and universal gate implementations Step-by-step projects using flip-flops, counters, and registers Real-world design with 74HC-series logic chips Techniques for designing combinational and sequential systems This book takes a design-first, application-driven approach to digital electronics—built around working circuits, tested logic, and hands-on experimentation.

Lees meer minder

Projecten met Arduino, ESPHome, Home Assistant en Raspberry Pi & Co. Dit e-book bevat verschillende voorbeeldprojecten, te beginnen met een inleiding tot elektronica. Het legt ook uit hoe je Home Assistant installeert op een Raspberry Pi, hoe je binnenklimaatsensoren gebruikt voor temperatuur en vochtigheid, hoe je het MQTT-protocol en andere interfaces implementeert, en hoe je ESPHome gebruikt om sensoren en actuatoren te integreren in Home Assistant. Talrijke video tutorials vullen het boek aan. 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

Lees meer minder

De werking van veruit de meeste moderne elektronische apparaten is niet slechts op één enkel principe gebaseerd. Vaak staat een of andere computer (doorgaans een microcontroller) centraal. Uit deze fundamentele opzet – een computer die is ingebed in een bepaalde toepassingsschakeling – is de algemene benaming Embedded Systems voortgekomen. De meeste van deze systemen moeten vanuit het niets worden ontwikkeld, en daarbij komt het op elk detail aan. Vindingrijkheid en veelzijdigheid zijn dan een vereiste. De problemen die opgelost moeten worden, vormen niet zelden een ware uitdaging en betreffen niet alleen de analoge en digitale elektronica maar ook de systeemarchitectuur, programmering en programma-organisatie.  De delen van deze reeks zijn geschreven voor iedereen – leerling, student of beginnend elektronicus – die zich terdege wil bekwamen in de professionele hardware- en systeemontwikkeling. En ze richten zich tot de allround-elektronicus die geen tijd heeft om specialist op een van de vele deelgebieden te worden maar die weet dat hij met standaard huis-, tuin- en keukenoplossingen niet ver komt. Ze bieden wat studenten en professionele elektronici nodig hebben: een opfrissing en verdieping van de basiskennis, een bron van inspiratie en een schat aan details en spitsvondigheden.  Dit deel behandelt de theoretische principes en de basisschakelingen van digitale technieken: signalen, bits en binaire getallen • propositielogica en Booleaanse algebra • schakelalgebra • het vereenvoudigen van schakelingen • combinatorische en sequentiële schakelingen • parameters • halfgeleidertechnologieën • signaalwegen • geïntegreerde schakelingen • impulsen • kloksystemen • initialisatie • combinatorische basisschakelingen • latches en flipflops • registers • adresseerbare geheugens • sequentiële basisschakelingen Andere delen in deze reeks: Passieve componenten • Hard- en software • Signaalwegen • Basisschakelingen

Lees meer minder