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today's leftovers

Filed under
HowTos

     

  • Shaun McCance: Documentation transforms in JavaScript

    Three weeks ago, I had a project idea while napping. I tried to forget it, but ended up prototyping it. Now I named it Hookbill and put it on GitLab. 

  • CY's Take on PWC#109
  • Reflow The Logo: Logo Contest

    Logo 1, is for Repair Preservation Group RPG is a nonprofit org with mission to make independent repair affordable, accessible and reliable for all people.

    Logo 2, is for Fight to Repair — the legislative arm of RPG that is fighting legislative battles to further RPGs mission.

  • Arduino-controlled Rubik's cube chandelier solves itself | Arduino Blog

    Rubik’s cubes have been mystifying and frustrating people for more than 40 years now. According to Forbes, 450 million Rubik’s cubes had been sold by 2020. But based on our very scientific estimates, only a small fraction of those have been solved. To avoid that difficulty, Stuart Gorman gave his Rubik’s cube chandelier the ability to unscramble itself.

    This large 3D-printed chandelier looks exactly like the iconic cube, except that each section is lit by LEDs instead of covered with a sticker. Those are WS2812B individually-addressable RGB LEDs controlled by an Arduino Mega board. People usually choose the Mega when they need a lot of I/O pins, but in this case Gorman picked the Mega because it has lots of RAM to work with. That RAM is necessary for handling the complexity of the Arduino code that the lamp is running.

    The lamp has a few different LED effects modes, which are selectable through a smartphone app that connects to the Arduino via a Bluetooth module. Static colors can be set to each face or it can flash random colors. But the exciting modes replicate traditional Rubik’s cube play. The first starts with a solved cube and then endlessly rotates random faces, like most people do when they attempt to solve a Rubik’s cube. The second mode will actually solve the cube, which it does by playing the first mode in reverse. This chandelier looks fantastic and is a lot of fun to watch in action.

  • NetBSD VM on bhyve (on TrueNAS)

    My new NAS at home is running TrueNAS Core. So far, it has been excellent, however I struggled a bit setting up a NetBSD VM on it. Part of the problem is that a lot of the docs and how-tos I found are stale, and the information in it no longer applies.

    TrueNAS Core allows running VMs using bhyve, which is FreeBSD’s hypervisor. NetBSD is not an officially supported OS, at least according to the guest OS chooser in the TrueNAS web UI Smile But since the release of NetBSD 9 a while ago, things have become far simpler than they used to be – with one caveat (see below).

  • Duf - Check Disk Usage on Linux

    Written purely in Go programming language, duf ( Disk Usage Free utility) tool is a free and opensource command-line tool that is an alternative to the df command. It intuitively displays the disk usage statistics of the system in a tabular format with color-coded output. It can be installed on Linux, BSD, Windows, and even macOS.

  • Linux Action News 186

    The University of Minnesota has been banned from the Linux kernel.

    We'll share the history, the context, and where things stand now around the controversial research that led to the ban.

    Plus Ubuntu 21.04 is out, and we try WSL's new GUI Linux app support.

  • Noodlings 28 | Building Things

    I purchased a new printer and had some issues with the proprietary plugin. The folks on the openSUSE forum are incredibly knowledgeable and helpful.

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.