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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

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This book details the use of the ARM Cortex-M family of processors and the Arduino Uno in practical CAN bus based projects. Inside, it gives a detailed introduction to the architecture of the Cortex-M family whilst providing examples of popular hardware and software development kits. Using these kits helps to simplify the embedded design cycle considerably and makes it easier to develop, debug, and test a CAN bus based project. The architecture of the highly popular ARM Cortex-M processor STM32F407VGT6 is described at a high level by considering its various modules. In addition, the use of the mikroC Pro for ARM and Arduino Uno CAN bus library of functions are described in detail. This book is written for students, for practising engineers, for hobbyists, and for everyone else who may need to learn more about the CAN bus and its applications. The book assumes that the reader has some knowledge of basic electronics. Knowledge of the C programming language will be useful in later chapters of the book, and familiarity with at least one microcontroller will be an advantage, especially if the reader intends to develop microcontroller based projects using CAN bus. The book should be useful source of reference to anyone interested in finding an answer to one or more of the following questions: What bus systems are available for the automotive industry? What are the principles of the CAN bus? What types of frames (or data packets) are available in a CAN bus system? How can errors be detected in a CAN bus system and how reliable is a CAN bus system? What types of CAN bus controllers are there? What are the advantages of the ARM Cortex-M microcontrollers? How can one create a CAN bus project using an ARM microcontroller? How can one create a CAN bus project using an Arduino microcontroller? How can one monitor data on the CAN bus?

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The Joy-Pi Advanced is a compact and powerful device that allows you to realize your projects quickly and easily. Whether you already have a lot of experience, or next to none, the Joy-Pi Advanced lets you unleash your creativity. Thanks to its compatibility with a wide range of platforms, including Raspberry Pi, Raspberry Pi Pico, Arduino Nano, BBC micro:bit, and NodeMCU ESP32, you can easily and quickly access your preferred platform. In addition, the Joy-Pi Advanced features more than 30 stations, lessons, and modules, giving you an unlimited variety of ways to get your projects done. With the self-developed learning center, you can not only improve your skills but also create new projects. The learning center offers a wealth of information and tutorials that will guide you step by step through your projects. Joy-Pi Advanced is characterized in particular by its intelligent switch units, which allow an extended use of the available pins. A total of three switch units are integrated, each equipped with 12 individual switches that provide precise control of the connected sensors and modules. This system solves the well-known problem of limited pin count that occurs with conventional microcontrollers. The switch units allow you to operate a large number of sensors and modules in parallel by switching them on and off individually. This simulates multiple pin assignment, allowing you to exploit the full power of your projects without compromising functionality. By combining innovative adapter boards and the micro:bit slot, you can achieve seamless compatibility with a wide range of microcontrollers such as Raspberry Pi Pico, NodeMCU ESP32, micro:mit and Arduino Nano. The specially developed adapter boards are designed to perfectly match the respective microcontroller. By plugging the microcontroller onto the appropriate adapter board and then plugging it into the micro:bit slot, the Joy-Pi Advanced quickly and easily becomes compatible with the different microcontrollers. This allows seamless integration of your preferred platform and the ability to combine the strengths of the different microcontrollers in your projects. This way, you can fully focus on your creative projects without worrying about the compatibility of different microcontrollers. The Joy-Pi Advanced simplifies the development process and gives you the possibility to design your projects flexibly and individually. Features Highly integrated development platform & learning center Fast, easy & wireless combination of various sensors & actuators Installation option for Raspberry Pi 4 Compatible with various microcontrollers Self-developed, didactic learning platform for Raspberry Pi & Windows Specifications Compatible to Raspberry Pi 4, Arduino Nano, NodeMCU ESP32, BBC micro:bit, Raspberry Pi Pico Installed sensors, actuators & components 39 Learning platform Over 40 entries in the know-ledge database, 10 projects, 10 learning tasks, 14 visions Displays 7-segment display, 16x2 display, 1.8“ TFT display, 0.96" OLED display, 8x8 RGB matrix Sensors DS18B20, shock sensor, hall sensor, barometer, sound sensor, gyroscope, PIR sensor, Light barrier, NTC, Light sensor, 6x touch sensor, color sensor, ultrasonic distance sensor, DHT11 temperature & humidity sensor Control Joystick, 5x switches, potentiometer, rotary encoder, 4x4 button matrix, relays, PWM fan Motors Servo interface, Stepper motor interface, Vibration motor Measuring & conversion modules Analog-Digital Converter, Level converter, voltmeter, Variable voltage supply Other components RTC real time clock, buzzer, EEPROM memory, infrared receiver, breadboard, RFID reader Adapter boards Adapter for NodeMCU ESP32, Arduino Nano & Raspberry Pi Pico, Board connectors for Raspberry Pi & External Boards Electronic components Infrared remote control, RFID chip, RFID card, 6x alligator clips, microSD card reader, servo motor, stepper motor, 32 GB microSD card Components 40x resistors, 3x green LEDs, 3x yellow LEDs, 3x red LEDs, 1x transistor, 5x buttons, 1x potentiometer, 2x capacitors Other accessories Screw assortment, screwdriver, accessory storage bag, power supply & power cable, servo mount Power supply Built-in power supply: 36 W, 12 V, 3 A Case connector: Small device plug C8 Voltage outputs 12 V, 5 V, 3.3 V, Variable voltage output (2-11 V) Data buses & signal outputs I²C, SPI, Analog to digital converter Battery (RTC) CR2032 Dimensions 327 x 200 x 52 mm Included Raspberry Pi 4 (8 GB RAM) Downloads Joy-Pi website Datasheet Manual

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MDP-P906 has a built-in cooling fan, and maximum output power of up to 300 W, which meets a wider range of testing needs and application scenarios. Through 2.4 GHz wireless communication, it can be connected to MDP-M01 Smart Digital Monitor module to realize the free combination of multiple channels of 300 W per channel. MDP-P906 has the index, stability and reliability comparable to a professional power supply. It can output pure current, and provide powerful functions such as programmable output, timing output, timing control, automatic compensation, boost mode, etc., making itself a real cost-effective, smart and customized programmable linear DC power supply. MDP-P906 adopts a precision CNC machined aluminum alloy shell, with fine workmanship, novel, mini and beautiful appearance, it completely subverts the rigid image of traditional desktop power supply. With stackable modular design and wireless communication function, MDP-P906 can work independently or paired, both on the workbench, and be carried out for on-site maintenance. MDP-P906 is a perfect solution for electronic engineer, especially field application engineers to meet different needs of power sources. Built-in silent cooling fan, instant cooling, ensure a stable and efficient output! Smart linear compensation, constant voltage & constant current Positive & negative output, series boost, parallel current sharing Applications Universal tests and teaching experiments in R&D laboratory Maintenance of digital products Property verification and fault diagnosis of devices and circuits Emergency power supply for model airplanes and vehicles Power supply testing of RF and microwave circuits or modules Quality control and quality inspection Supply purified power for high-accuracy digital-analog hybrid circuits and Hi-Fi audio devices Specifications Input DC 4.2-30 V/14 A (Max)QC 3.0/PD2.0, 20 V/5 A (Max) Output 0-30 V/0-10 A, 300 W (Max) Conversion efficiency 95% Output resolution 10 mV/2 mA, up to 1 mV/1 mA via Display Control module Output accuracy 0.03%+5 mV0.05%+2 mV Adjustment rate Load adjustment rate <±0.01%Power adjustment rate <±0.01% Ripple and noise <250 uVrms, 3 mVpp; 2 mArms Transient response <4 uS Safety protections Input over-voltage, under-voltage, reverse connection protection, output over-current, back-flow protection and over-temperature protection Others Automatically shut-down and enter micro-power modeSupport USB firmware upgrade Dimensions 112 x 66 x 20 mm Weight 181 g Included 1x MDP-P906 Digital Power Supply 2x Output Cable 1x User Manual Downloads User Manual v1.1 Firmware v1.32

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This book is about teaching the Python programming language using the Raspberry Pi 4 computer. The book makes an introduction to Raspberry Pi 4 and then teaches Python with the topics: variables, strings, arrays, matrices, tuples, lists, dictionaries, user functions, flow of control, printing, keyboard input, graphics, GUI, object oriented programming and many more topics. The book is aimed for beginners, students, practising engineers, hobbyists, and for anyone else who may want to learn to program in Python. The book includes many example programs and case studies. All the example programs and case studies have been tested fully by the author and are all working. The example programs aim to teach the various programming concepts of Python. The case studies cover the use of Python in the analysis and design of electronic circuits. Some of the case study topics are: Resistor colour code identification Resistive potential divider circuits Resistive attenuator design Zener diode voltage regulator design RC and RLC transient circuits Circuit frequency response Saving data on external memory stick Mesh and node circuit analysis using matrices Resonance in RLC circuits Transistor Biasing analysis Transistor amplifier design Design of active filters Interfacing hardware with GPIO, I²C and SPI Using Wi-Fi with Python and TCP/IP and UDP programs Using Bluetooth from Python Full program listings of all the programs used in the book are available at the Elektor website of the book. Readers should be able just to copy and use these programs in their Raspberry Pi projects without any modifications.

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Learn to program displays and GUIs with Python This book is about Raspberry Pi 4 display projects. The book starts by explaining how to install the latest Raspbian operating system on an SD card, and how to configure and use the GPIO ports. The core of the book explains the following topics in simple terms with fully tested and working example projects: Simple LED projects Bar graph LED projects Matrix LED projects Bitmap LED projects LED strips LCDs OLED displays E-paper displays TFT displays 7-inch touch screen GUI Programming with Tkinder One unique feature of this book is that it covers almost all types of display that readers will need to use in their Raspberry Pi based projects. The operation of each project is fully given, including block diagrams, circuit diagrams, and commented full program listings. It is therefore an easy task to convert the given projects to run on other popular platforms, such as Arduino or PIC microcontrollers. Python program listings of all Raspberry Pi projects developed in this book are available for download at Elektor.com. Readers can use these programs in their projects. Alternatively, they can modify the programs to suit their applications.

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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 book 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 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 book a rich and useful source of information.

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Die Programmiersprache „Python“ hat in den letzten Jahren einen enormen Aufschwung erlebt. Nicht zuletzt haben verschiedene Einplatinensysteme wie der Raspberry Pi zu deren Bekanntheitsgrad beigetragen. Aber auch in anderen Gebieten, wie der Künstlichen Intelligenz oder dem Machine Learning, hat Python weite Verbreitung gefunden. Es ist daher naheliegend, Python bzw. die Variante „MicroPython“ auch für den Einsatz in SoCs (Systems on Chip) zu verwenden. Leistungsfähige Controller wie der ESP32 der Firma Espressif Systems bieten eine hervorragende Performance sowie Wi-Fi- und Bluetooth-Funktionalität zu einem günstigen Preis. Mit diesen Eigenschaften wurde die Maker-Szene im Sturm erobert. Im Vergleich zu anderen Controllern weist der ESP32 einen deutlich größeren Flash und SRAM-Speicher, sowie eine wesentlich höhere CPU-Geschwindigkeit auf. Aufgrund dieser Leistungsmerkmale eignet sich der Chip nicht nur für klassische C-Anwendungen, sondern insbesondere auch für die Programmierung mit MicroPython. Das vorliegende Buch führt in die Anwendung der modernen Ein-Chip-Systeme ein. Neben den technischen Hintergründen steht vor allem MicroPython selbst im Vordergrund. Nach der Einführung in die Sprache werden die erlernten Programmierkenntnisse umgehend in die Praxis umgesetzt. Die einzelnen Projekte sind sowohl für den Einsatz im Labor als auch für Alltagsanwendungen geeignet. Neben dem eigentlichen Lerneffekt steht also auch die Freude am Aufbau kompletter und nützlicher Geräte im Vordergrund. Durch die Verwendung von Laborsteckboards können Schaltungen aller Art mit geringem Aufwand realisiert werden, sodass das Austesten der selbstgebauten Geräte zum lehrreichen Vergnügen wird. Durch die verschiedenen Anwendungen wie Wetterstationen, Digitalvoltmeter, Ultraschall-Entfernungsmesser, RFID-Kartenleser oder Funktionsgeneratoren sind die vorgestellten Projekte auch für Praktika oder Fach- und Studienarbeiten in den Naturwissenschaften bzw. im Natur- und Technikunterricht bestens geeignet.

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Dit praktijkboek richt zich tot iedereen die geïnteresseerd is in de techniek, de planning, de opbouw en het mogelijke rendement van zonnestroominstallaties. Het boek bevat veel nuttige informatie, van de principes van het genereren van stroom uit zonlicht via de dimensionering van leidingen, de werking van omvormers, laadregelaars en accuʻs tot en met de beschrijving van complete autonome of netgekoppelde fotovoltaïsche generatoren. Zowel de leek als de (meer of minder ervaren) elektrotechnicus kan dit boek ook als leidraad gebruiken bij de aansluiting van een generator op het elektriciteitsnet conform de voorschriften van de netbeheerder. Het boek bevat bovendien wetenswaardigheden over veiligheids bepalingen en over de belasting door en deugdelijke constructie van fotovoltaïsche generatoren. Ontwerp, planning en montage worden aan de hand van een groot aantal illustraties gedetailleerd en op een ook voor leken begrijpelijke wijze behandeld; bovendien geeft het boek waardevolle informatie over de kosten en eventuele opbrengst van zonnestroomgeneratoren. Het boek bevat ook een overzicht van belangrijke internet-sites waar gratis software kan worden gedownload voor het ontwerp en de dimensionering van netgekoppelde en autonome fotovol taïsche installaties, zodat geen kostbare PC-programmatuur hoeft te worden aangeschaft.

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Die WiFi-Module der chinesischen Firma Espressif haben schon längst die Maker-Community erobert, bieten sie doch zu einem konkurrenzlosen Preis MCU- und WiFi-Funktionalität. Mit einfachen Mitteln lässt sich ein Arduino mit einem ESP-Modul um WiFi erweitern. Die globale Bastler-Gemeinde ersetzte schon bald die integrierte Firmware mit eigener Firmware, sodass Entwickler ESP-Boards wie Arduino-Boards programmieren können. Der neue ESP32 geht einen Schritt weiter und ist in jeder Beziehung leistungsfähiger als der ESP8266. Zudem besitzt er nun Bluetooth-Funktionalität. Der ESP32 verfügt über einen 240-MHz-Zweikern-Mikroprozessor mit einer Performanz von 600 DMIPS. Neben 520 KByte SRAM befinden sich 16 MByte Flashspeicher an Board. Zur Kommunikation mit der Außenwelt enthält das System-on-a-Chip die 802.11-b/g/n-WiFi-Komponente HT40 und Bluetooth-Funktionalität. Als Sensoren bietet der ESP32 einen Hall-Sensor, eine zehnfache, kapazitive Touch-Schnittstelle, einen analogen Verstärker für niedrige Signale und einen 32-kHz-Kristallquartz. Der Bestseller-Autor Erik Bartmann hat sich ausführlich mit dem ESP32 beschäftigt. Heraus gekommen ist dabei Das ESP32-Praxisbuch, in dem er die Leser Schritt für Schritt in die Arbeit mit diesem preiswerten WiFi-Mikrocontroller einführt.

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Raspberry Pi 5 provides two four-lane MIPI connectors, each of which can support either a camera or a display. These connectors use the same 22-way, 0.5 mm-pitch “mini” FPC format as the Compute Module Development Kit, and require adapter cables to connect to the 15-way, 1 mm-pitch “standard” format connectors on current Raspbery Pi camera and display products.These mini-to-standard adapter cables for cameras and displays (note that a camera cable should not be used with a display, and vice versa) are available in 200 mm, 300 mm and 500 mm lengths.

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Mastering Surface Mount Technology takes you on a crash course in techniques, tips and know-how to successfully introduce surface mount technology in your workflow. Even if you are on a budget you too can jumpstart your designs with advanced fine pitch parts. Besides explaining methodology and equipment, attention is given to SMT parts technologies and soldering methods. In a step by step way, several projects introduce you to handling surface mount parts and the required skills to successfully build SMT assemblies. Many practical tips and tricks are disclosed that bring surface mount technology into everyone's reach without breaking the bank.

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