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De MSP430 is een populaire familie van microcontrollers van Texas Instruments. In dit boek zullen we werken met het kleinste type, namelijk de krachtige MSP430G2553. We zullen de mogelijkheden van deze microcontroller in detail bekijken, omdat hij zeer geschikt is voor zelfbouwprojecten omdat hij beschikbaar is in een P-DIP20 pakket.We zullen de microcontroller nader bekijken en vervolgens stap voor stap een aantal interessante applicaties bouwen, waaronder een 'Hello World' knipperende LED en een leuke klok applicatie, die de dag van de week kan berekenen op basis van de datum.Je leert ook hoe je code maakt voor de MSP microcontroller in assembler. Daarnaast wordt er gewerkt met de MSP-Arduino IDE, die het vrij eenvoudig maakt om snelle applicaties te maken zonder speciale diepgaande kennis van de microcontrollers.Alle code die in het boek wordt gebruikt, kan worden gedownload van de Elektor-website.

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Valve Amplifiers are regarded by many to be the ne plus ultra when it comes to processing audio signals. The combination of classical technology and modern components has resulted in a revival of the valve amplifier. The use of toraidal-core output transformers, developed by the author over the past 15 years, has contributed to this revival. The most remarkable features of these transformers are their extremely wide frequency ranges and their very low levels of linear and nonlinear distortion. This e-book (pdf) explains the whys and wherefores of toroidal output transformers at various technical levels, starting with elementary concepts and culminating in complete mathematical descriptions. In all of this, the interactions of the output valves, transformer and loudspeaker form the central theme. Next come the practical aspects. The schematic diagram of a valve amplifier often appears to be very simple at first glance, but anyone who has built a modern valve amplifier knows that a lot of critical details are hidden behind this apparent simplicity. These are discussed extensively, in connection with designs for amplifiers with output powers ranging from 10 to 100 watts. Finally, the author gives some attention to a number of special valve amplifiers, and to the theory and practice of negative feedback. In summary, this e-book offers innovative solutions for achieving perfect audio quality. Do-it-yourself builders, as well as persons who want to gain a deeper technical understanding of the complex world of audio transformers, valve amplifiers and audio signal processing, will find this e-book a rich and useful source of information.

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The author, Johan Basse Bergqvist, is an engineer, a musician, and an audiophile with a knack for building projects that produce the desired results. The combination of these skills leads to a uniquely valuable perspective on audio design that is routinely reflected in the book and passed on to the readers. Several design projects are provided, 40 in total. The designs are explained, and the unique features or methods he uses are described in further detail. Each design includes detailed schematics and a complete parts list. Many of the projects also include layout documentation in the form of CAD photos of the PCB layouts. The range of projects is very diverse and includes something that will appeal to everyone. Stereo amplifiers, guitar and bass amplifiers, preamplifiers for phono, and microphones are all covered. Several variants for each type are included, and the power amplifier designs range from a few watts to several hundred watts, which meet almost any power level you might tackle.

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Nobody has any doubt that valve amplifiers produce a remarkably beautiful sound. They have a lively, deep, clear, and expressive sound, and dynamically they do not appear to have any limitations. The author investigates, in a systematic theoretical approach, the reasons for these beautiful properties. He develops new models for power valves and transformers, thus enabling the designer to determine the properties of the amplifier during the design process. Mathematical models for the coupling of power valve(s) and output transformer are provided. These will generate new insights in a special kind of distortion: the dynamic damping factor distortion (DDFD). With mathematical models in the complex domain, especially the properties at the limits of our hearing range (from 20 Hz to 20 kHz) are investigated and the minimal stability criteria for the amplifier are formulated. The often-applied negative feedback in amplifiers is extensively modelled and discussed in relation to our hearing appreciating. And after all this theory a fine selection of special amplifiers is presented and discussed. You will notice in this book that the author not only writes about amplifier technique, but tells about the way the development of valve amplifiers can have an influence on your daily life; even the usefulness of patents is discussed. Summarizing: new theories and solutions for perfect audio with valve amplifiers. Not only the professional and the DIY-er but everyone who wants to understand valve amplifiers will read this book with much pleasure.

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Fully updated for Raspberry Pi 5 Raspberry Pi is a small, clever, British-built computer that's packed with potential. Made using a desktop-class, energy-efficient processor, Raspberry Pi is designed to help you learn coding, discover how computers work, and build your own amazing things. This book was written to show you just how easy it is to get started. Learn how to: Set up your Raspberry Pi, install its operating system, and start using this fully functional computer. Start coding projects, with step-by-step guides using the Scratch 3, Python, and MicroPython programming languages. Experiment with connecting electronic components, and have fun creating amazing projects. New in the 5th edition: Updated for the latest Raspberry Pi computers: Raspberry Pi 5 and Raspberry Pi Zero 2 W. Covers the latest Raspberry Pi OS. Includes a new chapter on the Raspberry Pi Pico. Downloads GitHub

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Mastering the Language and the Development PlatformMany 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.

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Derde, uitgebreide en herziene editie met AVR Playground en Elektor Uno R4Arduino boards zijn enorm succesvol geworden. Ze zijn eenvoudig te gebruiken en goedkoop. Dit boek maakt u niet alleen vertrouwd met de wereld van Arduino, maar leert u ook hoe u microcontrollers in het algemeen kunt programmeren. In dit boek wordt de theorie in praktijk gebracht op een Arduino-bord met behulp van de Arduino-programmeeromgeving.Er wordt ook wat hardware ontwikkeld: een multi-purpose shield om enkele van de experimenten uit de eerste 10 hoofdstukken op te bouwen; de AVR Playground, een echt op Arduino gebaseerd microcontroller-ontwikkelbord voor comfortabele applicatieontwikkeling, en de Elektor Uno R4, een Arduino Uno R3 op steroïden.De auteur, een Elektor Expert, voorziet de lezer van de theoretische basiskennis die nodig is om elke microcontroller te programmeren: in- en uitgangen (analoog en digitaal), interrupts, communicatiebussen (RS-232, SPI, I²C, 1-draads, SMBus, enz.), timers, en nog veel meer. De programma's en schetsen in het boek laten zien hoe u verschillende gangbare elektronische componenten kunt gebruiken: matrix toetsenborden, displays (LED, alfanumerieke en grafische kleuren LCD), motoren, sensoren (temperatuur, druk, vochtigheid, geluid, licht en infrarood), roterende encoders, piëzo buzzers, drukknoppen, relais, enz. Dit boek wordt uw eerste boek over microcontrollers met een happy end! Dit boek is voor u als u een beginner bent in microcontrollers, een Arduino gebruiker (hobbyist, knutselaar, kunstenaar, etc.) die zijn kennis wil verdiepen, een afgestudeerde elektronica student of een leraar op zoek naar ideeën.Dankzij Arduino is de uitvoering van de gepresenteerde concepten eenvoudig en leuk. Sommige van de voorgestelde projecten zijn zeer origineel: Geldspel Misophone (een muzikale vork) Car GPS Scrambler Weerstation DCF77 Decoder Illegale tijdzender Infrarood afstandsbediening manipulator Hinderlijke Geluidsgenerator Italiaans hoornalarm Oververhittingsdetector PID Regelaar Data Logger SVG-bestand Oscilloscoop 6-kanaals voltmeter Alle projecten en codevoorbeelden in dit boek zijn uitgeprobeerd en getest op een Arduino Uno-bord. Ze zouden ook moeten werken met de Arduino Mega en elk ander compatibel bord dat de Arduino shield uitbreidingsconnectoren blootlegt.Let op:Voor dit boek heeft de auteur een veelzijdige printplaat ontworpen die op een Arduino-bord kan worden gestapeld. De assemblage kan niet alleen worden gebruikt om veel van de in dit boek gepresenteerde projecten uit te proberen, maar maakt ook nieuwe oefeningen mogelijk die op hun beurt de mogelijkheid bieden om nieuwe technieken te ontdekken. Ook beschikbaar is een kit met onderdelen inclusief de printplaat en alle componenten. Met deze kit kunt u de meeste in het boek beschreven schakelingen en meer bouwen.Datasheets gebruikte actieve componenten (.PDF bestand): ATmega328 (Arduino Uno) ATmega2560 (Arduino Mega 2560) BC547 (bipolaire transistor, hoofdstukken 7, 8, 9) BD139 (bipolaire vermogenstransistor, hoofdstuk 10) BS170 (N-MOS transistor, hoofdstuk 8) DCF77 (ontvangermodule, hoofdstuk 9) DS18B20 (temperatuursensor, hoofdstuk 10) DS18S20 (temperatuursensor, hoofdstuk 10) HP03S (druksensor, hoofdstuk 8) IRF630 (N-MOS vermogenstransistor, hoofdstuk 7) IRF9630 (P-MOS vermogenstransistor, hoofdstuk 7) LMC6464 (quad op-amp, hoofdstuk 7) MLX90614 (infraroodsensor, hoofdstuk 10) SHT11 (vochtigheidssensor, hoofdstuk 8) TS922 (dubbele op-amp, hoofdstuk 9) TSOP34836 (infrarood ontvanger, hoofdstuk 9) TSOP1736 (infrarood ontvanger, hoofdstuk 9) MPX4115 (analoge druksensor, hoofdstuk 11) MCCOG21605B6W-SPTLYI (I²C LCD, hoofdstuk 12) SST25VF016B (SPI EEPROM, hoofdstuk 13) Over de auteur:Clemens Valens, geboren in Nederland, woont sinds 1997 in Frankrijk. Manager bij Elektor Labs en Webmaster van ElektorLabs, verliefd op elektronica, ontwikkelt hij microcontrollersystemen voor zijn plezier, en soms ook voor zijn werkgever. Polyglot - hij spreekt vloeiend C, C++, PASCAL, BASIC en verschillende assemblerdialecten - brengt hij het grootste deel van zijn tijd door op zijn computer terwijl zijn vrouw, hun twee kinderen en twee katten zijn aandacht proberen te trekken (alleen de katten slagen erin). Bezoek de website van de auteur: www.polyvalens.com.Authentieke getuigenis van Hervé M., een van de eerste lezers van het boek:'Ik huilde bijna van vreugde toen dit boek me in slechts drie zinnen dingen liet begrijpen die voorheen volkomen ondoorgrondelijk leken.'

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The Controller Area Network (CAN) was originally developed to be used as a vehicle data bus system in passenger cars. Today, CAN controllers are available from over 20 manufacturers, and CAN is finding applications in other fields, such as medical, aerospace, process control, automation, and so on. This e-book (pdf) is written for students, for practising engineers, for hobbyists, and for everyone else who may be interested to learn more about the CAN bus and its applications. The aim of this e-book is to teach you the basic principles of CAN networks and in addition the development of microcontroller based projects using the CAN bus. In summary, this e-book enables the reader to: Learn the theory of the CAN bus used in automotive industry Learn the principles, operation, and programming of microcontrollers Design complete microcontroller based projects using the C language Develop complete real CAN bus projects using microcontrollers Learn the principles of OBD systems used to debug vehicle electronics You will learn how to design microcontroller based CAN bus nodes, build a CAN bus, develop high-level programs, and then exchange data in real-time over the bus. You will also learn how to build microcontroller hardware and interface it to LEDs, LCDs, and A/D converters. The e-book assumes that the reader has some knowledge on basic electronics. Knowledge of the C programming language will be useful in later chapters of the e-book, and familiarity with at least one member of the PIC series of microcontrollers will be an advantage, especially if the reader intends to develop microcontroller based projects using the CAN bus.

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The author Stephan Menzel provides an introduction into capacitor technology and describes the wide range of capacitor types with their properties and parameters. Basic principles This chapter imparts basic knowledge on the relationships between the electric field, permittivity, as well as the structure and operating principles of a capacitor. Capacitor characteristics The electrical parameters and essential characteristics of a capacitor are explained in greater detail for the reader. This extends from the actual capacitance of a capacitor through to the interdependencies. Capacitor types Existing capacitor types and their characteristics are presented. Film, electrolyte and ceramic capacitors are considered in detail.

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The intention of this e-book (pdf) is to offer the reader understandings, ideas and solutions from the perspective of a workbench technician and electronics hobbyist. It is a descriptive text with many tables of useful data, servicing tips and supplementary notes of not so common knowledge. Today there is a re-emerging, nostalgic interest in vinyl records and associated music entertainment gear. With this interest, there is a paralleled market for the repair of this gear. This ‘hands-on’ servicing guide opens with fundamental considerations of the work space of repair and servicing. This includes a comprehensive discussion of essential test equipment and tools. Two chapters are devoted to obtaining servicing information about repair and obtaining spare parts. A key chapter is on general diagnosis and testing and includes the discussion of resistance, capacitance and inductance. These electrical properties are regularly in the mind of the repairer, so understanding of them is a key objective of this e-book. The next chapter is about time saving repair techniques and ensuring quality repair. The remaining chapters discuss entertainment equipment itself. Each of the chapters begins with an orderly discussion of the theory of operation and common and not so common problems specific to the equipment. All chapters conclude with a summary.

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This e-book is intended for electronics enthusiasts and professionals alike, who want a much deeper understanding of the incredible technology conquests over the pre-digital decades that created video. It details evolution of analogue video electronics and technology from the first electro-mechanical television, through advancements in Cathode Ray Tubes, transistor circuits and signal processing, up to the latest analogue, colour-rich TV, entertainment devices and calibration equipment. Key technological advances that enabled monochrome video and, eventually, colour are explained. The importance, compromises and techniques of maintaining crucial backward legacy compatibilities are described. The generation, signal processing and playback of analogue video signals in numerous capture, display, recording and playback devices together with operating principles and practices are examined. Technical and, often, political merits and deficiencies of key national and international video standards are highlighted. Several formats are shown to win and ultimately to co-exist. This e-book begins at fairly basic levels; concepts are introduced with human physiological perceptions of light and colour explained. This leads to the subject matter of luminance and chrominance; their equations and the circuits to process. There is full, detailed analysis of waveform shapes and timings inside video equipment and relevant popular connections e.g. S-video. Several analogue video projects which you can build yourself are also included in this book; with schematics, circuit board layouts and calibration steps to help you obtain the best results. The book makes use of many colour pages where the subject matter demands it (e.g. test cards). If you really want a deeper understanding of analogue video then this e-book is for you!

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35 Touch Develop & MicroPython ProjectsThe BBC micro:bit is a credit sized computer based on a highly popular and high performance ARM processor. The device is designed by a group of 29 partners for use in computer education in the UK and will be given free of charge to every secondary school student in the UK.The device is based on the Cortex-M0 processor and it measures 4 x 5 cm. It includes several important sensors and modules such as an accelerometer, magnetometer, 25 LEDs, 2 programmable push-button switches, Bluetooth connectivity, micro USB socket, 5 ring type connectors, and a 23-pin edge connector. The device can be powered from its micro USB port by connecting it to a PC, or two external AAA type batteries can be used.This e-book is about the use of the BBC micro:bit computer in practical projects. The BBC micro:bit computer can be programmed using several different programming languages, such as Microsoft Block Editor, Microsoft Touch Develop, MicroPython, and JavaScript.The e-book makes a brief introduction to the Touch Develop programming language and the MicroPython programming language. It then gives 35 example working and tested projects using these language. Readers who learn to program in Touch Develop and MicroPython should find it very easy to program using the Block Editor or any other languages.The following are given for each project:• Title of the project• Description of the project• Aim of the project• Touch Develop and MicroPython program listingsComplete program listings are given for each project. In addition, working principles of the projects are described briefly in each section. Readers are encouraged to go through the projects in the order given in the e-book.Also available:Kit of parts for the experiments published in this book. This kit contains: 4 x LED, 4 x 270 ohm resistor, 5 x wire (male-female), 2 x wire (male-male), 3 x Button, 3 x 10 kilo-ohm resistor, 1 x TMP36 temperature sensor, 1 x Buzzer, 1 x Light dependent resistor, 1 x RGB LED, 1 x BC337 transistor, 1 x 680 ohm resistor, 1 x 3V DC motor, 1 x ML8511 UV sensor module, 1 x mini servo, 1 x small breadboard, 1 x BBC micro:bit edge connector, 1 x BBC micro:bit adapter board, 1 x mounting plate

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Elke mobiele telefoon bevat een GSM/GPRS-modem waarmee de telefoon met de buitenwereld kan communiceren. Met behulp van de GSM-modems kunnen gebruikers audiogesprekken voeren en SMS-berichten verzenden en ontvangen. Bovendien stelt de GPRS-modem gebruikers in staat verbinding te maken met het internet en grote bestanden zoals foto's en video via het internet te verzenden en te ontvangen. Dit e-book is bedoeld voor mensen die willen leren hoe ze GSM/GPRS-modems kunnen gebruiken in microcontroller-gebaseerde projecten. Twee typen populaire microcontroller families worden in het e-book behandeld: PIC-microcontrollers, en de Arduino. De zeer populaire PIC18F87J50 microcontroller met gemiddelde prestaties wordt gebruikt in PIC gebaseerde projecten samen met een GSM Click board. Daarnaast wordt het SIM900 GSM/GPRS schild gebruikt bij de Arduino Uno projecten. Zowel GSM als GPRS gebaseerde projecten zijn opgenomen in het e-book. Met het e-book kunt u apparatuur op afstand bedienen door SMS-berichten van uw mobiele telefoon naar de microcontroller te sturen, de omgevingstemperatuurmetingen van de microcontroller als SMS-berichten naar een mobiele telefoon sturen, de GPRS-commando's gebruiken om vanaf een microcontroller toegang te krijgen tot het internet, temperatuurmetingen naar de cloud sturen met behulp van UDP- en TCP-protocollen, enzovoort. Er wordt aangenomen dat de lezer enige basiskennis heeft van de taal C en het gebruik van microcontrollers in eenvoudige projecten. Hoewel niet noodzakelijk, is kennis van ten minste één lid van de PIC-microcontrollerfamilie en de Arduino Uno een voordeel. Het is ook nuttig als de gebruiker enige kennis heeft van basiselektronica. Alle projectsoftware is gratis te downloaden (zie rubriek 'Bijlagen/Downloads').

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The PC has long-time outgrown its function as a pure computer and has become an all-purpose machine. This book is targeted towards those people that want to control existing or self-built hardware from their computer. Using Visual Basic as Rapid Application Development tool we will take you on a journey to unlock the world beyond the connectors of the PC. After familiarising yourself with Visual Basic, its development environment and the toolset it offers, items such as serial communications, printer ports, bit-banging, protocol emulation, ISA, USB and Ethernet interfacing and the remote control of test-equipment over the GPIB bus, are covered in extent. Each topic is accompanied by clear, ready to run code, and where necessary, schematics are provided that will get your projects up to speed in no time. This book will show you advanced things like: using tools like Debug to find hardware addresses, setting up remote communication using TCP/IP and UDP sockets and even writing your own internet servers. Or how about connecting your own block of hardware over USB or Ethernet and controlling it from Visual Basic. Other things like internet-program communication, DDE and the new graphics interface of Windows XP are covered as well. All examples are ready to compile using Visual Basic 5.0, 6.0, NET or 2005. Extensive coverage is given on the differences between what could be called Visual Basic Classic and Visual basic .NET / 2005.

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Advance your electronics knowledge and gain the skills necessary to develop and construct your own functioning gadgets. Written by a pair of experienced engineers and dedicated hobbyists, Practical Electronics for Inventors, Fourth Edition, lays out the essentials and provides step-by-step instructions, schematics, and illustrations. Discover how to select the right components, design and build circuits, use microcontrollers and ICs, work with the latest software tools, and test and tweak your creations. This easy-to-follow book features new instruction on programmable logic, semiconductors, operational amplifiers, voltage regulators, power supplies, digital electronics, and more. Practical Electronics for Inventors, Fourth Edition, covers: Resistors, capacitors, inductors, and transformers Diodes, transistors, and integrated circuits Optoelectronics, solar cells, and phototransistors Sensors, GPS modules, and touch screens Op amps, regulators, and power supplies Digital electronics, LCD displays, and logic gates Microcontrollers and prototyping platforms Combinational and sequential programmable logic DC motors, RC servos, and stepper motors Microphones, audio amps, and speakers Modular electronics and prototypes

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Technology is constantly changing. New microcontrollers become available every year and old ones become redundant. The one thing that has stayed the same is the C programming language used to program these microcontrollers. If you would like to learn this standard language to program microcontrollers, then this book is for you!ARM microcontrollers are available from a large number of manufacturers. They are 32-bit microcontrollers and usually contain a decent amount of memory and a large number of on-chip peripherals. Although this book concentrates on ARM microcontrollers from Atmel, the C programming language applies equally to other manufacturer’s ARMs as well as other microcontrollers.Features of this book: Use only free or open source software. Learn how to download, set up and use free C programming tools. Start learning the C language to write simple PC programs before tackling embedded programming - no need to buy an embedded system right away! Start learning to program from the very first chapter with simple programs and slowly build from there. No programming experience is necessary! Learn by doing - type and run the example programs and exercises. Sample programs and exercises can be downloaded from the Internet. A fun way to learn the C programming language. Ideal for electronic hobbyists, students and engineers wanting to learn the C programming language in an embedded environment on ARM microcontrollers.

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De ESP8266 van Espressif is een Wi-Fi microchip met volledige TCP/IP stack en functionaliteit van een microcontroller. Het heeft indruk gemaakt in de maker community met zijn lage prijs.Maar veel ontwikkelaars waren ontevreden over het hoge stroomverbruik van de ESP8266. De ESP32, uitgerust met een ULP (Ultra Low Power) coprocessor, biedt hiervoor een oplossing.Dit E-Book bevat een aantal projecten met ESP32 & ESP8266 en een interview met de CEO Teo Swee Ann van Espressif. Artikels Lichtkrant met ESP-12F, 512 LED’s via WiFi aansturen VFD-klok met ESP32, met nauwkeurige internettijd Zuinige ESP32, de programmering van de ULP-coprocessor DCF77-emulator met ESP8266, internettijd vervangt draadloze tijd WiFi desktop-thermostaat, flexibele en programmeerbare temperatuurregeling Timers voor de WiFi desktop-thermostaat, zeven kanalen met atoomprecisie Zwitsers zakmes voor microcontrollers, PlatformIO als universeel programmeertool ESP8266 USB-programmeer-adapter voor de Espressif-modules ESP-01 en ESP-012 De ESP8266 op het Android I/O-board, zelf nieuwe firmware flashen Weerdisplay, actuele weersinformatie op een kleuren-LCD GoNotify, een flexibele IoT sensor-interface. Join the bubble! CV-monitor met ESP8266, domotica voor de overgang naar duurzame energie MicroPython en het pyboard, van een knipperende LED naar … een knipperende LED aan een webserver De grote broer van de ESP8266, de eerste stappen met de ESP32 en de Arduino-IDE RGBDigit klok, een kleurrijk 7-segment-display voor uw data WLAN voor microcontrollers, besturen met de ESP8266 De terugkeer van de Wi-Fi-besturingskaart, apparatuur bedienen met uw smartphone Compact en autonoom WLAN, handig gebruik van de ESP8266 zonder MCU

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Ready to explore the world around you? By attaching the Sense HAT to your Raspberry Pi, you can quickly and easily develop a variety of creative applications, useful experiments, and exciting games. The Sense HAT contains several helpful environmental sensors: temperature, humidity, pressure, accelerometer, magnetometer, and gyroscope. Additionally, an 8x8 LED matrix is provided with RGB LEDs, which can be used to display multi-color scrolling or fixed information, such as the sensor data. Use the small onboard joystick for games or applications that require user input. In Innovate with Sense HAT for Raspberry Pi, Dr. Dogan Ibrahim explains how to use the Sense HAT in Raspberry Pi Zero W-based projects. Using simple terms, he details how to incorporate the Sense HAT board in interesting visual and sensor-based projects. You can complete all the projects with other Raspberry Pi models without any modifications. Exploring with Sense HAT for Raspberry Pi includes projects featuring external hardware components in addition to the Sense HAT board. You will learn to connect the Sense HAT board to the Raspberry Pi using jumper wires so that some of the GPIO ports are free to be interfaced to external components, such as to buzzers, relays, LEDs, LCDs, motors, and other sensors. The book includes full program listings and detailed project descriptions. Complete circuit diagrams of the projects using external components are given where necessary. All the projects were developed using the latest version of the Python 3 programming language. You can easily download projects from the book’s web page. Let’s start exploring with Sense HAT.

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STmicroelectronics’ wireless IoT & wearable sensor development kit‘SensorTile.box’ is a portable multi-sensor circuit board housed in a plastic box and developed by STMicroelectronics. It is equipped with a high-performance 32-bit ARM Cortex-M4 processor with DSP and FPU, and various sensor modules, such as accelerometer, gyroscope, temperature sensor, humidity sensor, atmospheric pressure sensor, microphone, and so on. SensorTile.box is ready to use with wireless IoT and Bluetooth connectivity that can easily be used with an iOS or Android compatible smartphone, regardless of the level of expertise of the users. SensorTile.box is shipped with a long-life battery and all the user has to do is connect the battery to the circuit to start using the box.The SensorTile.box can be operated in three modes: Basic mode, Expert mode, and Pro mode. Basic mode is the easiest way of using the box since it is pre-loaded with demo apps and all the user has to do is choose the required apps and display or plot the measured data on a smartphone using an app called STE BLE Sensor. In Expert mode users can develop simple apps using a graphical wizard provided with the STE BLE Sensor. Pro mode is the most complex mode allowing users to develop programs and upload them to the SensorTile.box.This book is an introduction to the SensorTile.box and includes the following: Brief specifications of the SensorTile.box; description of how to install the STE BLE Sensor app on an iOS or Android compatible smartphone required to communicate with the box. Operation of the SensorTile.box in Basic mode is described in detail by going through all of the pre-loaded demo apps, explaining how to run these apps through a smartphone. An introduction to the Expert mode with many example apps developed and explained in detail enabling users to develop their own apps in this mode. Again, the STE BLE Sensor app is used on the smartphone to communicate with the SensorTile.box and to run the developed apps. The book then describes in detail how to upload the sensor data to the cloud. This is an important topic since it allows the sensor measurements to be accessed from anywhere with an Internet connection, at any time. Finally, Pro mode is described in detail where more experienced people can use the SensorTile.box to develop, debug, and test their own apps using the STM32 open development environment (STM32 ODE). The Chapter explains how to upload the developed firmware to the SensorTile.box using several methods. Additionally, the installation and use of the Unicleo-GUI package is described with reference to the SensorTile.box. This PC software package enables all of the SensorTile.box sensor measurements to be displayed or plotted in real time on the PC.

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In this book the author presents all essential aspects of microcontroller programming, without overloading the reader with unnecessary or quasi-relevant bits of information. Having read the book, you should be able to understand as well as program, 8-bit microcontrollers. The introduction to microcontroller programming is worked out using microcontrollers from the PIC series. Not exactly state-of-the-art with just 8 bits, the PIC micro has the advantage of being easy to comprehend. It is offered in a DIP enclosure, widely available and not overly complex. The entire datasheet of the PIC micro is shorter by decades than the description of the architecture outlining the processor section of an advanced microcontroller. Simplicity has its advantages here. Having mastered the fundamental operation of a microcontroller, you can easily enter into the realms of advanced softcores later. Having placed assembly code as the executive programming language in the foreground in the first part of the book, the author reaches a deeper level with ‘C’ in the second part. Cheerfully alongside the official subject matter, the book presents tips & tricks, interesting measurement technology, practical aspects of microcontroller programming, as well as hands-on options for easier working, debugging and faultfinding.

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Building Model Electric Motors from ScrapYou’re standing in front of an old card table in a driveway at a garage sale. On that table is a one-quart aluminum saucepan, a votive candle holder, pieces of some office machinery, and a wooden awards plaque. What do you see there? If you did not answer “a six-cylinder radial electromagnetic attraction motor,” then you need this book!H.P. Friedrichs (author of The Voice of the Crystal and Instruments of Amplification) returns this time to explore the principles behind the operation and construction of five simple, yet impressive, model electric motors.Aspiring mechanical model makers are often discouraged by their lack of access to machine tools, like mills, lathes, or drill presses. Friedrichs demonstrates that with some basic knowledge, an open eye, and a sharp mind, one can use commonly available (and often discarded) parts and materials to engineer one’s way around any lack of expensive machine tooling. In fact, every motor in this book was built from scrap, and can be assembled with hand tools.You’ll learn where to hunt for and find materials, and where to salvage suitable bearings. You’ll know where useful solenoids can be extracted from scrap, and how to fabricate bobbins to wind your own. You’ll learn how to time your motors, fashion a connecting rod, make a commutator from scratch, use a hall effect sensor to detect magnet position, use a transistor as a switch, and much more.About the authorH.P. Friedrichs is a degreed electrical engineer (BSEE), inventor, and author with more than three decades of experience working in domains ranging from audio, medical, and radio, to software, automotive, and aerospace. At present, he is a Principal Engineer with Honeywell, involved in the design and support of specialized equipment used for testing and validating aircraft power generation products.He has five U.S. patents to his credit and holds three radio licenses including Extra-Class Amateur (AC7ZL), Commercial Radio Operator with Radar Endorsement and GMDSSOperator/Maintainer with Radar Endorsement. He is also a certified VE.Friedrichs is the author of numerous technical articles appearing in a variety of magazines, newsletters, and web sites but is best known for his books The Voice of the Crystal and Instruments of Amplification. Now cult classics among 'from-scratch' electronics experimenters, these books have enjoyed favorable reviews from the editors of such prestigious periodicals as QST, CQ Magazine, Practical Wireless, and Make Magazine.H.P. Friedrichs lives in Tucson, Arizona, with his wife and his German Shepherd/laboratory assistant — who is prone to 'borrow' books and tools but not return them.

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Meten is voor een praktiserend elektronicus even vanzelfsprekend als ademhalen. Of het nu om het ontwikkelen van nieuwe schakelingen gaat, de controle van elektronische apparaten tijdens de productiefase of om het foutzoeken in defecte apparatuur: meetapparaten zijn het belangrijkste gereedschap en worden voortdurend gebruikt. 'Weet wat je meet', luidt een bekende uitspraak. En zo is het maar net: om zichzelf geen rad voor ogen te draaien moet de elektronicus weten wat hij doet, moet hij de nauwkeurigheid van zijn meetapparatuur en vooral de voor- en nadelen van de toegepaste meetmethode kennen. En hier steekt dit boek de lezer de helpende hand toe: uitgaand van theoretische beschouwingen en definities van de belangrijkste begrippen van de meettechniek begeleidt het de lezer bij de reis van eenvoudige wijzerinstrumenten via multimeter en oscilloscoop tot en met FFT-analyzers en gespecialiseerde meetapparaten zoals audio-analyzers, geluidsdrukmeters, apparaat- en installatietesters.

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RFID technology has conquered many areas in which barcodes, magnetic strips and contact smartcards were used previously. Everyday applications, such as electronic ticketing, access cards, debit cards and electronic identity documents would not be possible without this technology.MIFARE is the most widely used RFID technology, and this eBook (PDF) provides a practical and comprehensive introduction to it. Among other things, the initial chapters cover physical fundamentals, relevant standards, RFID antenna design, security considerations and cryptography.The complete design of a reader’s hardware and software is described in detail. The reader’s firmware and the associated PC software support programming using any .NET language. The specially developed PC program, “Smart Card Magic.NET”, is a simple development environment that supports sending commands to a card at the click of a mouse, as well as the ability to create C# scripts. Alternatively, one may follow all of the examples using Visual Studio 2010 Express Edition.Finally, the major smart card reader API standards are introduced. The focus is on programming contactless smartcards using standard PC/SC readers using C/C++, Java and C#.

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