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today's leftovers

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  • Supplino is a variable benchtop power supply that you can build yourself | Arduino Blog

    Working with electronics requires access to stable power in a variety of voltages. Some components require 3.3V and others require 5V. Still others need 9V or 12V — there are many possibilities. You could keep a variety of wall warts on hand, but a variable benchtop power supply is a more convenient option. Supplino is one choice and this guide from Giovanni Bernardo and Paolo Loberto will walk you through how to build one.

    Supplino can accept anything from 4 to 40 volts and can output anything from 1.25 to 36 volts, with a maximum of 5A. An XH-M401 module with an XL4016E1 DC-DC buck converter handles the voltage regulation. Technically, you could use that alone to power your components. But the addition of an Arduino Nano board (or Nano Every) makes the experience far friendlier. It monitors the power supply output and drives a 1.8″ 128×160 TFT LCD screen, which displays the present voltage, amperage, and wattage.

  • Relocating Fedora's RPM database [LWN.net]

    The deadlines for various kinds of Fedora 36 change proposals have mostly passed at this point, which led to something of a flurry of postings to the distribution's devel mailing list over the last month. One of those, for a seemingly fairly innocuous relocation of the RPM database from /var to /usr, came in right at the buzzer for system-wide changes on December 29. There were, of course, other things going on around that time, holidays, vacations, and so forth, so the discussion was relatively muted until recently. Proponents have a number of reasons why they would like to see the move, but there is resistance, as well, that is due, at least in part, to the longstanding "tradition" of the location for the database.

  • CPU Isolation – A practical example – by SUSE Labs (part 5)
  • How to install Mantis bug tracker on Debian 11?

    Hello friends. In this post, you will learn how to install Mantis Bug Tracker on Debian 11.

More in Tux Machines

today's howtos

  • Comprehensive Guide to Using FFmpeg to Convert Media Files

    FFmpeg is one of those modern marvels of open source software. It is a suite of libraries and smaller programs to handle video and audio files primarily. It works with images and other multimedia files such as video streaming formats. It has lots of uses like video transcoding, video editing, video scaling, video cropping or other video manipulation work. At its heart FFmpeg is a command line tool used with the ffmpeg command. It has a basic simple video player and ability to probe video media information for analysis. FFmpeg is also included in the workflow of other software like the popular video player VLC. Enterprise companies like YouTube use it in their core processing when ingesting video uploads. Overall FFmpeg can play, record, convert, and stream audio and video. It includes libavcodec – the leading audio/video codec library. In this tutorial we’ll install FFmpeg and learn how to use some its most popular features through practical examples and detailed explanations.

  • Extracting substrings on Linux [Ed: This should say "GNU", not "Linux"]

    There are many ways to extract substrings from lines of text using Linux and doing so can be extremely useful when preparing scripts that may be used to process large amounts of data. This post describes ways you can take advantage of the commands that make extracting substrings easy.

  • How to Install WordPress with Apache and Let's Encrypt SSL on Ubuntu 22.04
  • How to install Godot Mono 3.4.4 on a Chromebook
  • How to install Steam Link on Debian 11 - Invidious

    In this video, we are looking at how to install Steam Link on Debian 11.

Hackers getting married

We had several of our old-time friends from the GNU Project, and some guests with young children still unused to such an international context who soon enough learned to enjoy the sound of different languages and the happy chaos of people meeting for the first time, some more traditional if not formal, others fun and weird. Read more

Fedora Releases and Red Hat/IBM Puff Pieces

  • Ben Williams: F36-20220516 updated Live isos released

    The Fedora Respins SIG is pleased to announce the latest release of Updated F36-20220516-Live ISOs, carrying the 5.17.6-300 kernel. This set of updated isos will save considerable amounts of updates after install. ((for new installs.)(New installs of Workstation have about 1GB of updates savings )).

  • Red Hat Enterprise Linux 8.6: Better security, more options

    Do you want a solid Linux distribution that also delivers the latest languages and solid security? Yes? Then consider getting Red Hat Enterprise Linux 8.6. Red Hat announced this new release at the Red Hat Summit. It has numerous new features, but the ones that caught my eye were the security improvements.

  • OS consistency solves Linux talent issues, says RHEL executive

    The new Red Hat Enterprise Linux, released during the recent Red Hat Summit, caters to rapidly escalating hardware development occurring throughout tech, along with a growing Linux admin skills shortage. RHEL 9 performs the combo double act, in part, by more efficiently optimizing the operating system, according to Gunnar Hellekson (pictured), general manager of the Enterprise Linux Business Unit at Red Hat Inc. Upgrading to the new OS means enterprises can get by with fewer admins. A skills shortage is caused, in part, by a lack of U.S. visas.

These two Linux desktops are the simplest picks for new users

Let's face it, any time you come across articles that offer advice on choosing the right Linux distribution, they tend to get bogged down in a lot of technical advice that rarely (if ever) applies to those who've never experienced Linux. They'll speak of things like rolling releases, package managers, kernels, open-source licensing, and other features and ideologies that not only have little bearing on those new to Linux and open-source technology but mire the decision in unnecessary complications. I want to take a very different approach, one that should make the process quite simple for anyone looking to dive into the world of desktop Linux for the first time. I'm going to shrug off the usual advice and aim straight for the heart of the matter. What exactly is that matter? Read more