Language Selection

English French German Italian Portuguese Spanish

Devices/Embedded and Open Hardware Leftovers

Filed under
GNU
Linux
Hardware

  • Embedded Linux for Teams | Ubuntu

    Developer-friendly embedded Linux should just deliver apps to devices. Satellite companies don’t build their own rockets. They focus on building satellites and lease a rocket to deliver it as a payload. Many developer teams also have to “build the rocket” to deliver embedded applications.

    Developers would be more successful, if Linux vendors made it their job to provide and maintain the scaffold that teams need to deliver embedded apps. In such a world, teams would focus on creating apps.

    The resulting app-centric development cycle could boil down to booting, building and deploying. Building on top of vendor-provided scaffolds, developers would create a bootable image for their target boards. Teams would then develop apps. After testing, they will build a system image that delivers all these apps. Then burn, deploy, done.

  • Personal Raspberry Pi music streamer
  • Run Pi-hole as a container with Podman on openSUSE - SUSE Communities

    There is arguably no better way to protect devices on your local network from unwanted content than Pi-hole. Add a machine running Pi-hole to your network, and it will quietly scrub all incoming traffic from pesky stuff like ads and trackers in the background. As the name suggests, Pi-hole was initially designed to run on a Raspberry Pi. But if you already have a machine running openSUSE on your network, you can deploy a Pi-hole container on it instead. And to make things a bit more interesting, you can use Podman instead of Docker for that.

    Installing Podman on openSUSE 15.2 is a matter of running the sudo zypper install podman command. A Pi-hole container needs the 80 and 53 ports, so make sure that these ports are available on your machine.

  • MorphESP 240 ESP32-S2 board integrates a 1.3-inch color display (Crowdfunding)

    We’ve already seen ESP32 platforms with a color display such as M5Stack, but MorphESP 240 is kind of cute with a 1.3-inch color display, features the more recent ESP32-S2 WiFi processor, and supports battery power & charging.

  • Rockchip RK3588 specifications revealed – 8K video, 6 TOPS NPU, PCIe 3.0, up to 32GB RAM

    Rockchip RK3588 is one of the most anticipated processors for the year on this side of the Internet with the octa-core processor features four Cortex-A76 cores, four Cortex-A55 cores, an NPU, and 8K video decoding support.

    The roadmap shows an expected launch date in Q3/Q4 2020, but sadly the release date will be pushed back in the future. Having said that, the Rockchip Developer Conference (RKDC) is now taking place, and the company has put up a poster that reveals a bit more about the processor.

  • Arduino Blog » Arduino psychic ‘magically’ guesses random numbers

    Standard Arduino Nanos can be used for many purposes, but they do not feature wireless capabilities. Somehow, though, Hari Wiguna’s Arduino psychic system is apparently able to pass data between two of them. No external communication hardware is implemented, yet one Nano is able to recognize when a random number chosen on the other Nano setup is input via an attached keypad.

    As noted by Wiguna, it’s easier shown than explained, and you can see this techno-magic trick in action in the first clip. How things work is revealed in the second video, but can you guess how it’s done?

More in Tux Machines

Trisquel 9 Review: Freedom Vehicle

Here is my review of Trisquel 9.0 Etiona the newly released computer operating system. It is the successor of Flidas and now based on Ubuntu 18.04. It brings the latest improvements by excellently keeping its user friendliness from the family of most secure operating systems on earth. As always, I choose the Regular Edition, with MATE Desktop choice, to report this to you. We will see what’s new in this release and why I call it Software Freedom Vehicle now continuing Successful Freedom in the past. With Etiona, everyone can see that Free Software as well as copyleft are already practical and now we can see that even clearer than before. Let's go! Read more

Postgresql service failed because the control process exited with an error code

PostgreSQL is a free and open-source, community-driven, standard-compliant, and most popular object-relational database management system. It is used by popular IT companies like Uber, Netflix, Instagram, Spotify, etc. Recently I installed PostgreSQL and getting an error while running daemon. This is mainly because PostgreSQL not getting sufficient permission to create the folder required to store database information. Read more

today's leftovers

  • Bob’s 2021 Tech Predictions: What a Difference a Pandemic Makes

    I predicted that IBM would dump a big division and essentially remake itself as Red Hat, its Linux company. Well yes and no. IBM did announce a major restructuring, spinning-off Global Technology Services just as I predicted (score one for me) but it has all happened slowly because everything slows down during a pandemic. The resulting company won’t be called Red Hat (yet), but the rest of it was correct so I’m going to claim this one, not that anybody cares about IBM anymore.

  • Robert Cringley Predicted 'The Death of IT' in 2020. Was He Right?
  • openSUSE Smiles

    There is no end to my amazement of the openSUSE community. They do such a fantastic job of making a wonderful distribution with all the tools that keep me productive. I am very thankful for the reliability I enjoy using openSUSE. The community members also do a great job of helping me through a jam, should I drive myself into one.

  • Retroarch for Android – The Complete Guide - Make Tech Easier

    The first thing you need to do, of course, is install Retroarch from the Play Store. Once you’ve done that, open Retroarch, and you’ll be presented with the main menu, which may mean absolutely nothing to you if you’re unfamiliar with Retroarch.

  • Considering Preparedness

    In short it is necessary to update your IT Disaster Recovery Plan if you are relying on resources physically based in the United States, I think. Nobody is quite sure what exactly is coming down the pike.

  • Junichi Uekawa: Yesterday was our monthly Debian meeting.

    Yesterday was our monthly Debian meeting. We do one every month for Tokyo and Kansai combined, because it's online and no reason to split for now. I presented what I learnt about nodejs packaging in Debian. This time, I started using Emacs for presentation, presenting PDF file. This week I switched most of my login shells to emacsclient, and experimenting.

  • WordPress Post Vs. Page

    Welcome back to the WordPress 101 series. In this series, we are discussing the basics of WordPress for new WordPress users. In this article, you’ll learn the differences between WordPress post vs. page. Often new users get confused between WordPress posts and pages. I remember my cousin created more than 10 pages before he realized he should’ve created posts, not pages. For new users, it may be difficult to understand why WordPress has two separate options to publish content. For them, one can create 200 pages instead of 200 posts and that should make no difference in how search engines see that content.

Programming Leftovers

  • GCC's Profile Guided Optimization Performance With The Ryzen 9 5950X - Phoronix

    Given the talk in prior days around patches for PGO'ing the Linux kernel and some readers not being familiar with Profile Guided Optimizations by code compilers, here are some fresh benchmarks on a Ryzen 9 5950X looking at the benefits of applying PGO optimizations to various benchmarks. We have benchmarked GCC and Clang PGO performance many times over the years with this just being some fresh data using a Ryzen 9 5950X and the latest software stack on Ubuntu 20.10. The testing was done by first running various open-source benchmarks without PGO, repeating the tests to generate profiles for the compiler to consume with PGO, and then benchmarking those PGO-enabled builds. These numbers are about best case scenarios given that with the testing for the PGO-enabled build, the benchmarks are repeated and thus matching well to the original profile. In more real-world, general purpose scenarios it can be more difficult generating an accurate profile for your actual workflow / software usage.

  • libsigsegv @ Savannah: libsigsegv 2.13 is released

    libsigsegv version 2.13 is released.

  • I told you so, 2021 edition

    You will recall that in 2004, which is now seventeen years ago, I wrote a document explaining why I made the design trade-offs that I did in XScreenSaver, and in that document I predicted this exact bug as my example of, "this is what will happen if you don't do it this way."

    And they went and made that happen.

    Repeatedly.

  • Jamie Zawinski Calls Cinnamon Screensaver Lock-Bypass Bug 'Unconscionable'

    Legendary programmer Jamie Zawinski has worked on everything from the earliest releases of the Netscape Navigator browser to XEmacs, Mozilla, and, of course, the XScreenSaver project.

  • Why and How to Use Java.util.stream.Collectors

    Streams are a wonderful feature in Java allowing you to write clean, efficient and powerful code. If you haven’t consumed the output of the stream, you will probably want to collect it. That’s when the methods from Java.util.stream.Collectors come to help.