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Devices and Open Hardware/Modding

Submitted by Roy Schestowitz on Friday 14th of January 2022 12:22:18 PM Filed under
Hardware
  • Slimbook 4K grabber, a good choice for Linux

    Today we are going to present a device that can be of great help to those who are dedicated to making screencasting from Linux: Slimbook 4K grabber.

    Although Linux has seen a great improvement as a desktop operating system over the last decade, there are still areas where it is almost useless, and sometimes not because of you. Captors are one of those segments because few of the manufacturers mainstream they support the system, not even through Android or ChromeOS (which would bounce back to GNU / Linux thanks to the kernel).

  • Pico Does PID | Hackaday

    If you wanted to, say, control a temperature you might think you could just turn on a heater until you reach the desired temperature and then turn the heater off. That sort of works, but it is suboptimal — you’ll tend to overshoot the goal and then as the system cools down, you’ll have to catch up and the result is often a system that oscillates around the desired value but never really settles on the correct temperature. To solve that, you can use a PID — proportional integral derivative — loop and that’s what [veebch] has done with a Rasberry Pi PICO and Micropython.

    The idea is to control an output signal based on the amount of difference between the actual temperature and the desired temperature (the proportional error). In addition, the amount is adjusted based on the long term error (integral) and any short term change (the derivative). You can also see a video about using the control loop to make a better sous vide burger, below.

  • New free resources for young people to create 3D worlds with code in Unity
  • Network interface routing priority on a Raspberry Pi

    As I start using Raspberry Pis for more and more network routing activities—especially as the Compute Module 4 routers based on Debian, OpenWRT, and VyOS have started appearing—I've been struggling with one particular problem: how can I set routing priorities for network interfaces?

  • Ghost in the ethernet optic

    You see, Smart SFP’s are a bit of a terrifying concept. SFP’s are (until now apparently) actually quite simple devices that “simply” take input electrical signals and turn them into optical signalling, or carry them down a Direct Attach Cable (DAC)

    The proposed smart SFP said, “Hey there is plenty of space in this thing! Why not also put a little FPGA, and an ARM core that can share the ethernet link, that way we can do more things!”

  • Throwback to 2021, More from Librem 5 in 2022 – Purism

    We’ve had a really good year of not only adding more functionality for the phone to the Linux kernel and the mainline.

    We have continued to ship out more Librem 5s each month and continued to communicate more reliable shipping estimates.

    The Librem 5 phone has become quite usable in 2021 and will get much better in 2022. Here is a complete run-down from our team.

  • This clock counts down to retirement | Arduino Blog

    For most people, the idea of retiring is a very exciting thought. Finally, after decades of hard work, you can clock out for the last time and spend the rest of your life relaxing and enjoying your leisure years. RdRnr318’s coworker updates her whiteboard every day to countdown the number of days until she gets to retire. To save Martha some effort and reduce the office’s marker budget, RdRnr318 built this “Nearly-Autonomous Retirement Countdown Display” to replace the whiteboard.

    This device does exactly what it says on the tin: it shows a countdown timer with the number of days until Martha reaches her retirement. It also displays the countdown in seconds, minutes, and hours, so Martha can get granular with her retirement daydreams. This device needs no buttons for setting the time, because RdRnr318 programmed it specifically for Martha. Her retirement date is hardcoded and there is a real-time clock with a battery backup, so it can automatically calculate the countdown even after losing power.

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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

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  • 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
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