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Devices/Embedded Leftovers

  • A teaspoon of computing in every subject: Broadening participation in computer science

    From May to November 2022, our seminars focus on the theme of cross-disciplinary computing. Through this seminar series, we want to explore the intersections and interactions of computing with all aspects of learning and life, and think about how they can help us teach young people. We were delighted to welcome Prof. Mark Guzdial (University of Michigan) as our first speaker.

  • Rockchip RK3588 Pico-ITX board launched with four-node cluster box (Crowdfunding) - CNX Software

    The Mixtile Blade 3 Pico-ITX single board computer (SBC) powered by Rockchip RK3588 processor has now launched on Crowd Supply with either 8GB or 16GB RAM, and an optional four-node cluster box with a built-in PCIe switch designed to accommodate four Mixtile Blade 3 boards. The board also comes with up to 128GB of storage, two 2.5GbE interfaces, HDMI 2.1 output, HDMI 2.0 input, USB 3.2 Gen 1 USB Type-C ports, as well as a mini PCIe Gen 2 for expansion and a 30-pin GPIO header for expansion, as well as U.2 edge connector with 12V, PCIe x4 Gen 3 and SATA signals to interface with other Mixtile boards and build clusters.

  • Put A New Spin On Your 3D Printed Parts

    Once you get tired of printing keychains and earbud holders with your 3D printer, you’ll want to design things a bit more sophisticated. How about things that rotate? [3DSage] has a good how-to about how to integrate a simple motor and controller into a few different size boxes. Combined with some 3D printed linkages, these boxes can turn your project — printed or otherwise — into something that spins.

Programming Leftovers

  • Things Are Getting Rusty In Kernel Land | Hackaday

    The other answer is that Rust is an easy fit with C code and kernel programming. Rust does it’s magic in the compiler. The code you write is what actually runs, without an interpreter or garbage collection trying to be helpful. Rust hasn’t overdosed on Object Oriented patterns, but meshes nicely with the C-style structs already used in the kernel. Even the stack model is very similar to C. There’s one problem with Rust’s memory-safe guarantee — it’s impossible to write a kernel that is formally memory-safe. A kernel has to write to unallocated memory, do weird pointer math, and other seemingly bizarre things to actually make our computers work. This doesn’t work well with a language that tries to guarantee that memory manipulations are safe. How do you write kernel code with Rust, then? Rust has added the unsafe keyword, allowing use of direct memory access and other such techniques that don’t work with Rusts’s memory guarantees. Keep the potential problems together, and it makes auditing easier. There’s at least one other language that may come to mind as an incremental update to C that tries to do some of these things: C++. Surely this would have been even a better fit, right? Kernel devs have some strong feelings about that idea. To put it gently, none of the improvements in C++ are useful in the context of the kernel, and some of the other changes just get in the way.

  • How to Get User Input in Java

    In programming languages, taking the user’s input is an essential task. In Java, multiple predefined classes are used to get the user’s input such as Scanner, BufferedReader, and Console class. All these classes utilizes various methods for handling input such as nextLine(), readLine(), etc.

  • How to convert string to int in Java

    Converting one data type to other data types is a common task in the prommer’s life. If we talk about the string to int conversion it can be achieved using two build-in methods i.e., Integer.ParseInt() and Integer.ValueOf(). Usually, we perform the string to int conversion when we have to execute mathematical operations over the strings containing numeric data.

  • Array of Pairs in C++

    The term pair refers to the combination of two values of different types. Pair allows you to keep two separate objects as a single unit. It is mostly utilized when storing tuples. The pair container is a basic container declared in the utility header that consists of two collected data or objects. The first element in the pair container is referred to as ‘first,’ while the second element is referred to as ‘second’, with the order fixed as (first, second). By default, the object of a specified array is allocated in a map or hash map of the type ‘pair,’ with all of the ‘first’ elements having unique keys paired with their ‘second’ value objects. To obtain the elements, we use the variable’s name followed by the dot operator and by the first or second keywords.

  • Dart Hello World

    Dart is a Google-developed static programming language. It allows for client-side and server-side application development. As per the GitHub adoption index, it has become the most widely used programming language because it incorporates the flutter toolkit. However, the Flutter Framework is commonly utilized in developing Android applications, iOS applications, IoT (Internet of Things), and online applications. Dart has a high syntactic and semantic similarity to JavaScript, Java, CPP, and python. It is a vibrant object-oriented language with lexical scope and closure. Dart was released in 2011, but it gained prominence after 2015 with the release of Dart 2.0. In this article, we will look at the basic representation of Dart syntax and how to print hello world in the dart programming language. The fundamental framework of Dart programming will be demonstrated here.

Games: Old World, Broken Sword 5, Psychonauts 2

Louis-Philippe Véronneau - Introducing metalfinder

Introducing metalfinder, a cli tool to find concerts using your local music collection! At the moment, it scans your music collection, creates a list of artists and queries Bandsintown for concerts in your town. Multiple output formats are supported, but I mainly use the ATOM one, as I'm a heavy feed reader user. Read more