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Open Hardware/Modding: RISC-V, Arduino, and Raspberry Pi

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Hardware
  • Nezha RISC-V Linux SBC launched for $99 and up - CNX Software

    Last month, we wrote about Allwinner D1 SBC & processor that promised to offer a relatively low-cost RISC-V Linux solution. We were not given a name at the time, but there was a logo of Nezha, a fictional character from Chinese literature.

    The board is now known as the Nezha SBC and has been launched on Indiegogo for $99 and up as a board designed for IoT projects running Linux, but can also be purchased directly on Aliexpress for the same price.

  • This soft tactile sensor can simultaneously estimate the contact force and location | Arduino Blog

    Robots are often filled with a myriad of different sensors but being able to detect touch is still fairly tough. This is primarily due to needing a large sensing area, flexible surfaces, and usually having complex circuitry. Imagine a robotic gripper that uses several “fingers” to lift and manipulate produce, or a humanoid that can respond to feedback on its hands. Other technologies such as capacitive and vision sensors have been tried in the past, but both use complicated and expensive components. A team at the Department of Mechanical Engineering at UC Berkeley was able to engineer a solution to this problem by utilizing a novel combination a two-layer structure. The first layer is a conductive fabric that is responsible for sensing the contact force, whereas the second layer of four rubber elements senses where the touch took place.

  • Make a Raspberry Pi Pico-based Midi Fighter | HackSpace 43
  • Raspberry Pi transforms old Wurlitzer into modern digital jukebox
  • Recognizing handwritten MNIST digits on an Arduino Uno using LogNNet | Arduino Blog

    The Arduino Uno is famous for its ease of use and compact size, yet its microcontroller, the ATmega328P, is quite small. The 328P contains a mere 32KB of flash storage for programs and 2KB of RAM, which has traditionally made it unsuitable for machine learning applications. However, a team at the Institute of Physics and Technology at Petrozavodsk State University was able to cram an algorithm that can recognize the handwritten digits within the MNIST dataset. Without getting too complicated, the Uno takes in an array of pixels that range in value from 0 to 255, or one byte. The entire 28 by 28 grid is then flattened to a single array of 784 elements that is passed into a reservoir that holds the weights for each pixel. As the model continues to get trained, these weights are gradually adjusted until the output matches the correct digit.

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.