Bøger af Mike James

The Raspberry Pi makes an ideal match for the Internet of Things. But to put it to good use in IoT you need two areas of expertise, electronics and programming and because of the way hardware and software engineering tend to occupy separate niches, you may need help with combining the two which is what this book sets out to do.Python is an excellent language for learning about physical computing. It might not be as fast as C, but it is much easier to use for complex data processing. One reason for Python's popularity is its wealth of supporting libraries and there are several for interfacing hardware. The GPIO Zero library is the official way to use Python with the GPIO and other devices and this book looks at how to use it to interface to fundamental IoT devices - from LEDs and buzzers to servos and stepper motors and several off-the-shelf Raspberry Pi add-ons.This revised second edition had been expanded to cover all the current Raspberry Pis including the latest, the Pi 5, and the Pi Zero 2W which, with its WiFi capability and being a quad-core device, is an ideal device for IoT projects. It has also been updated to cover the latest version of the GPIO Zero library, which is both the library recommended by Raspberry Pi and the only one that works with the Pi 5.The emphasis in this book is about using and understanding the hardware and GPIO Zero. It not only shows you how to "follow the beaten track", but how to create your own tracks. While it isn't a project book, many of the code examples described are part way to projects and all of the devices and techniques described can be used to create practical projects. Similarly while it doesn't teach you the whole of Python, it does bring you up to speed in the aspects of the language needed for interfacing with hardware.Harry Fairhead has worked with microprocessors, and electronics in general, for many years and is an enthusiastic proponent of the IoT. He is the author of Raspberry Pi IoT in C, which has recently been republished in its third edition, and Raspberry Pi IoT in C Using Linux Drivers, now in its second edition.Mike James is the co-author Raspberry Pi IoT in Python Using Linux Drivers, Second Edition. He is also the author of the Programmer's Python: Something Completely Different series of books.

The Raspberry Pi makes an ideal match for the Internet of Things. To put it to good use in IoT you need two areas of expertise, electronics and programming, and this presents a barrier to getting started. However, there is an overlooked route that can provide a shortcut. Pi OS, the Raspberry Pi's operating system, is Linux- based and Linux drivers are available for many off-the-shelf IoT devices. Using Linux drivers saves the effort of implementing low-level code and has the advantage of working the same on all versions of the Pi, including the recently launched Pi 5 which isn't hardware compatible with earlier versions. This Second Edition has been updated to cover the Pi 5 and also the Pi Zero 2W, which is an ideal candidate for use in IoT projects. It has also been updated to use the latest versions of Pi OS, Bullseye and Bookworm. Throughout this book you will find a practical approach to understanding electronic circuits and datasheets and translating this to code, specifically using Python and VS Code. The first IoT program anyone writes is "Blinky" to flash an LED and this book is no exception, but it might not be quite what you expect. Instead of using a GPIO line driver, it uses the Linux LED driver. The GPIO isn't left out, however, as the next three chapters focus on its use via the GPIO character driver, which replaces the old, but very common, sysfs GPIO driver. This is the way to do modern GPIO. A key component in any look at Linux and its relationship to hardware is the relatively new Device Tree. While most accounts of this resource are aimed at device driver writers, this one is aimed at device driver users and to this end we look at several devices, including the DHT22 temperature and humidity sensor. After a brief detour into some basic electronics, we see how Pulse Width Modulation is supported via a driver. From here we tackle the two standard buses, I2C and SPI, first going through the basics and then looking at the two attempts to impose a higher organization, the hardware monitoring system, hwmon, and Industrial I/O, IIO. The 1-Wire bus is also covered in detail. The final chapter takes things to the next level and considers creating your own custom overlays by writing fragments to the device tree. Harry Fairhead's other books include Applying C For The IoT With Linux; Programming the Raspberry Pi Pico/W, 2nd Ed, Raspberry Pi IoT in C, 3rd Ed, Raspberry Pi IoT in C Using Linux Drivers, 2nd Ed, Programming the Raspberry Pi Pico/W, 2nd Ed and Programming the ESP32 in MicroPython. Mike James is the author of the Programmer's Python: Something Completely Different series of books and several other programming and computer science titles in the I Programmer Library.

Writing a C extension for Python is good for fun and profit! The fun part is that adding Python to C gives you so much more power and a deeper understanding of how Python works. The internals of Python are worth knowing about because they suggest new approaches to other problems. As well as being interesting, it is also a valuable skill. Extending & Embedding Python Using C tells you everything you need to know about the C API, which is what you use to create an extension. It is essentially the Python runtime and so exploring it tells you a lot about Python. You don't need to be an expert Python programmer to create an extension, but it helps. As you are going to be writing mostly C code, programming in C is a more important skill for this task. While you don't have to be a C expert, you do need to be reasonably competent and C aficionados will enjoy finding out about some of the clever techniques in use in the C API. Extending Python is a way of bringing any C-based application or library to a much wider audience. Converting Python functions into C functions is also a way of speeding things up. Moreover, you can provide access to hardware or system features that are usually inaccessible by creating an extension. The final chapter explains how to convert the skills you have gained in creating a Python extension to embed Python in a C program. This is a less common requirement, but it has some interesting advantages and possibilities and once you know how to create a Python extension it is easy. Mike James has a BSc in Physics, an MSc in Mathematics, a PhD in Computer Science and in a long career as a programmer he has mastered many programming languages. He is the founder and chief editor of I-Programmer, the online magazine written by programmers for programmers and the author of dozens of books. His previous three books on Python, Programmer's Python: Everything Is An Object, Programmer's Python: Everything Is Data and Programmer's Python: Async form a set of "Something Completely Different" books that look at what makes Python special and sets it apart from other programming languages. While not part of the series, this book shares the same overall philosophy.

Have you ever heard the statement that powerful things come in small packages? We use this catch phrase jokingly about an individual who has a spunky attitude in a small body. We generally think of this phrase though in terms of items that are small in structure and yet powerful in their implementation and influence. The purpose of this book is to give you a stick of dynamite. These simple truths are dynamic, powerful, and they can be used to help make significant changes in any size church including yours. The spark is the work of the Holy Spirit that must ignite and explode what is contained. What is needed desperately in churches (specifically in Sunday School/small groups) today is for the fuse to be ignited through supplication and preparation. Then when it all comes together that which is inside will impact that which is surrounding. Artwork by Chris Groves

Much has been written about aviation, nearly all of it focussed on the glamorous work of pilots. Even cabin crew have checked in their stories. However, though a hundred of us stand behind every pilot, virtually nothing has been written about groundlings, without whom there would be no flying. Mayfly is one man's account of his two-and-a-half-decade adventure in aviation; the fun, the excitement, the tragedy, as witnessed (mostly) from the ground.

Adding WiFi to the Raspberry Pi Pico turns this low-cost, small form factor device into a true IoT device. The extra capabilities added to the Pico W open up loads of opportunities, but only if you are prepared to do battle with the two libraries that provide networking and security - lwIP and mbedtls respectively. The problem with these large libraries of code is that they are poorly documented and don't refer directly to the Pico W and its SDK. This book sets out to remedy this by providing a guide to these libraries along with examples of what you can do with them. Having introduced the Pico WiFi Stack and basic network connections, we look at how to use TCP to create the all-important Protocol Control Block and then tackle implementing an HTTP client. As well as covering the basic mechanics of using lwIP, we also concentrate on how to organize the use of an asynchronous library based on callbacks. The problem of IoT security is unique because IoT devices can be physically accessed by an attacker and hence any secrets embedded in their code have to be considered almost as public knowledge. Even so it is worth implementing encryption and this is achieved using mbedtls to create an HTTPS client. If you can ensure the physical security of the IoT device, then running it as a server is possible and this is covered in both HTTP and HTTPS modes, complete with certificates. We cover the basics of cryptography, including the problem of generating random numbers, what an encryption suite is and the various modes of AES encryption.>Harry Fairhead is also the author of Programming The Raspberry Pi Pico/W In C; Raspberry Pi IoT in C, Raspberry Pi IoT In C Using Linux Drivers, Applying C For The IoT With Linux, Fundamental C: Getting Closer To The Machine and Micro: bit IoT in C. Mike James is the author of Programming the Raspberry Pi Pico/W in MicroPython; Raspberry Pi IoT In Python Using GPIO Zero; and the Programmer's Python: Something Completely Different series of books and several other programming and computer science titles in the I Programmer Library.

Transform your photography with this comprehensive guide to over 100 photography composition techniques and tools.Whether you're a beginner mobile photographer or a professional using a dedicated camera, this jargon-free, basic to advanced guide will show you how to attract, hold and guide the attention of your viewer. With a focus on photographic intention and composition, you'll discover new ideas and inspiration in every genre, from macro to landscape, nature to travel, family to product, and black and white to color photography. The secret to impactful and engaging photos is creating them from the perspective of the viewer. This 'composition stacking' system, involves including techniques and tools from each of the four steps to creating a compounded composition. From beautiful aesthetics to dramatic visual tension, this four-step system will empower you to intuitively create your next favorite photo.This book groups over 100 composition techniques and tools into four categories, creating a chronological process to follow. The stages cover where to position the camera (smartphone or dedicated camera), where to place the main visual anchor (subject) in the frame, how to position all the contextual elements in the scene. The final step in the system is editing, where you'll discover several tools and techniques to enhance the composition and visual hierarchy, using mobile photo editing apps.Discover your creative eye and develop your photographic style with this fun and practical guide. Learn to critique an existing photo to identify what appeals to you and apply the same techniques in your own photography. Whether you're looking to create more balance, movement, flow, depth, or juxtaposition, this book is the key to transforming your photography.

There is a new edition of this book.The Raspberry Pi makes an ideal match for the Internet of Things. To put it to good use in IoT you need two areas of expertise, electronics and programming, and this presents a barrier to getting started. However, there is an overlooked route that can provide a shortcut. Pi OS, the Raspberry Pi's operating system, is Linux- based and Linux drivers are available for many off-the-shelf IoT devices. These provide a very easy-to-use, high-level, way of working. The problem that this book solves is that there is very little documentation to help you get started.Throughout this book you will find a practical approach to understanding electronic circuits and datasheets and translating this to code, specifically using Python. Python is an excellent language for learning about the IoT or physical computing. It might not be as fast as C, but it is much easier to use for complex data processing. The emphasis in this book is on understanding how things work so that you can apply your new knowledge to your own projects. You can use any Python development system that you know, but the programs in the book have been developed using Visual Studio Code and its remote development facilities.The first IoT program anyone writes is "Blinky" to flash an LED and this book is no exception, but it might not be quite what you expect. Instead of using a GPIO line, it uses the Linux LED driver - no hardware and no fuss. The GPIO isn't left out, however, as the next three chapters focus on its use via the new GPIO character driver, which replaces the old and very common sysfs GPIO driver. This is the way to do modern GPIO.A key component in any look at Linux and its relationship to hardware is the relatively new Device Tree. While most accounts of this resource are aimed at device driver writers, this one is aimed at device driver users and to this end we look at several devices, including the DHT22 temperature and humidity sensor. After a brief detour into some basic electronics, we see how Pulse Width Modulation is supported via a driver. From here we tackle the two standard buses, I2C and SPI, first going through the basics and then looking at the two attempts to impose a higher organization, the hardware monitoring system, Hwmon, and Industrial I/O, IIO. The third standard bus, although generally not supported in hardware, is the 1-Wire bus. This is covered in detail and even includes an introduction to using Netlink, which uses the sockets API to send messages to and from the kernel to access the driver. The final chapter takes things to the next level and considers creating your own custom overlays by writing fragments to the device tree.This is the second title jointly authored by Harry Fairhead and Mike James and can be seen as the alternative approach to that outlined in Raspberry Pi IoT In Python Using GPIO Zero. For both books, Harry brings his expertise in electronics and the IoT and Mike contributes the Python code.Harry Fairhead is the author of other IoT-related titles including Raspberry Pi IoT in C, Second Edition; Micro: bit IoT in C, Second Edition; Applying C For The IoT With Linux and Fundamental C: Getting Closer To The Machine.Mike James is the author of Programmer's Python: Everything is an Object and other programming and computer science titles in the I Programmer Library.

There is a new edition of this book covering GPIO Zero 2 and the Pi 5 The Raspberry Pi makes an ideal match for the Internet of Things. But to put it to good use in IoT you need two areas of expertise, electronics and programming and because of the way hardware and software engineering tend to occupy separate niches, you may need help with combining the two. Python is an excellent language with which to learn about the IoT or physical computing. It might not be as fast as C, but it is much easier to use for complex data processing. One reason for Python's popularity is its wealth of supporting libraries and there are several for interfacing hardware. The GPIO Zero library is the official way to use Python with the GPIO and other devices and this book looks at how to use it to interface to fundamental IoT devices - from LEDs and buzzers to servos and stepper motors and several off-the-shelf Raspberry Pi add-ons. Importantly, it explains how it works so that you can extend it to custom devices. Studying GPIO Zero is also a great way to improve your Python and this book teaches you to think like an IoT programmer. After reading it, you will be in a better position to tackle interfacing anything-with-anything without the need for custom drivers and prebuilt hardware modules.The emphasis in this book on understanding how things work and using this knowledge to create new devices and integrate them into GPIO Zero. You can use any Python development system that you know, but the programs in the book have been developed using Visual Studio Code and its remote development facilities. All the code is available on the book's web page along with everything you need to get started.Harry Fairhead has worked with microprocessors, and electronics in general, for many years and is an enthusiastic proponent of the IoT. He is the author of Raspberry Pi IoT in C, which has recently been republished in its second edition, updated for Raspberry Pi 4. His other recent books include Applying C For The IoT With Linux and Fundamental C: Getting Closer To The Machine.Mike James is the author of Programmer's Python: Everything is an Object and other programming and computer science titles in the I Programmer Library. His programming career spans several generations of computer technology, but he keeps his skills completely up to date and has a PhD in Computer Science.

There is a third edition of this book ISBN-13:978-1871962901Kotlin is attracting attention as "a better Java" especially since Google backed it as a language for Android development. In this book Mike James introduces Kotlin to programmers. You don't have to be an expert programmer in Java or any other language, but you need to know the basics of programming and using objects.While Kotlin is similar to Java, and you can pick up much of the language as you go along, a deeper understanding will enable you to create better and more robust programs. As with all languages there are some subtle areas where an understanding of how things work makes all the difference.Second Printing: Improved layout, minor typos removed and all code double checked

"Mike James is a poet in love with bridges, a poet of praise in search of connective tissue, relentlessly on the move, searching for signifiers, trying to find that loose thread of inspiration. "The sky is something we can drink from," he writes. "Darkness is never clean or clear," knowing a human being in love with mystery is never finished, and that the world is mostly hidden from us, and poetry is one of the ways humans discover the most important aspects of them-selves, illuminating and untangling as it tells. These lovely poems are a blessing, an unexpected warm wind blows through them and amazing declarations shiver forth as James travels and watches and listens. "Sound brings us to our senses," said Thoreau, and the poems here are quiet and tight, acutely aware of their own dissolution, and the temporary spaces that we occupy. "The moon looks nothing like the one I touched," writes James, and with a deftsurrealistic brush he fills in all the colors he finds and theones he had hoped to find. There are wonders to discover in every poem and I gobbled them up. Sit with this bookand listen and the singing will settle in your imagination.Don't just take my word for it, open the cover and startswimming and you will be immersed in a better world." -Keith Flynn, editor of The Asheville Poetry Review and author of The Skin of Meaning"Mike James writes with a toymaker's sense of wonder. His poems, like toys, delight and fascinate, leading the reader's imagination in strange and beautiful directions. 'I never put a feather back on a bird,' he says in 'It's Lovely, at Last,' and we, looking on, know exactly what he means and how that irrational failure feels. James's poems attack the mind with a surrealistic bent like the verses of James Tate. They spiral and swirl, then lift and float. 'Most of my friends live with hallucinations,' he says in 'Discount Ghazal of Everyday Saints.' To read these poems is to be one of James's friends, dancing with phantasms. His writing is something to be experienced as much as read: a journey well worth taking." -Ace Boggess, author of I Have Lost the Art of Dreaming It So and The Prisoners¿"Like C.K. Williams, Mike James is a master of the flexible long line and its component parts. Compact in form, expansive in vision, his poems render ordinary events in startling focus, and find surreal gestures where most of us wouldn't expect them. I envy the precision and energy of poems like "Thinning Stars, Along the River," and the humor of those like "Where I'm From." This is a vivid and lively book, amusing and sobering at once."--William Doreski, author of Riding the Comet

Mike James makes his home outside Nashville, Tennessee. He has published in numerous magazines throughout the country in such places as Plainsongs, Laurel Poetry Review, Birmingham Poetry Review, and Chiron Review. His poetry collections include: Parades (Alien Buddha), Jumping Drawbridges in Technicolor (Blue Horse), First-Hand Accounts from Made-Up Places (Stubborn Mule), Crows in the Jukebox (Bottom Dog), My Favorite Houseguest (FutureCycle), and Peddler's Blues (Main Street Rag.) He served as an associate editor of The Kentucky Review and currently serves as an associate editor of Unbroken.

Mike James has been widely published in magazines, large and small, throughout the country. His eleven previous poetry collections include: Crows in the Jukebox (Bottom Dog), My Favorite Houseguest (FutureCycle), and Peddler's Blues (Main Street Rag). He has served as an associate editor for the Kentucky Review and Autumn House Press, as well as the publisher of the now defunct Yellow Pepper Press. He makes his home outside Nashville, Tennessee. More information can be found on his website at mike.jamespoetry. com.

Imagination, adventure, and a big ol' dose of nonsense!Noah and his trusty sidekick, Rufus, are off on another adventure. Join them on Spaghetti Mountain as they battle a stinky clove of garlic, survive the treacherous Swamp Bolognes...

Intended for electronics undergraduates, this work covers analogue, digital electronics and microelectronics - at a level suitable for most first and second year modules. It covers the mandatory units (units 1-7) of the new Higher National scheme.