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Open Hardware/3-D Printing

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Hardware
OSS
  • Meltdown And Spectre Processor Vulnerabilities: Is It Time To Revive Open Source Alternative?

    The beginning of the year 2018 brought new challenges in the form of Spectre and Meltdown vulnerabilities in most of the processor architectures.  In layman terms, both of these vulnerabilities allow hackers to steal sensitive data like passwords.  This vulnerability is applicable to Intel, AMD, and ARM. This means the problem is universal as it affects almost all devices ranging from embedded devices, smartphones, desktops, and servers to supercomputers.

  • When the canary breaks the coal mine

    Nobody likes it when kernels don't work and even less so when they are broken on a Friday afternoon. Yet that's what happened last Friday. This was particularly unsettling because at -rc8, the kernel is expected to be rock solid. An early reboot is particularly unsettling. Fortunately, the issue was at least bisected to a commit in the x86 tree. The bad commit changed code for an AMD specific feature but oddly the reboot was seen on non-AMD processors too.

    It's easy to take debug logs for granted when you can get them. The kernel nominally has the ability for an 'early' printk but that still requires setup. If your kernel crashes before that, you need to start looking at other debug options (and your life choices). This was unfortunately one of those crashes. Standard x86 laptops don't have a nice JTAG interface for hardware assisted debugging. Debugging this particular crash was not particularly feasible beyond changing code and seeing if it booted.

  • DIY Open-Source PantoProbe Precision Probe

    Electronics enthusiasts, hobbyists and makers looking for a handy tool to help you troubleshoot their latest project, may be interested in an open source PantoProb created by Kurt Schaefer. As you can see from the image above the open source probe requires a few 3D printed parts as well as some off-the-shelf hardware which is easily sourced. Kurt has also provided full instructions and a Github repo with all the necessary files to make your very own 3D printed testing probe. Check out the video below to learn more.

  • What the Apple 3D Printing Patents Mean for Our Industry

    Recently Apple has been granted a patent for a color 3D printing idea whereby the printed object is first made and then colored in afterwards. This idea is a straightforward one; using it one could print an object using FDM for example and then later color it with an inkjet print head. This method would play to both technologies’ strengths with FDM making for strong objects that are very dimensionally accurate but often suffer from poor surface quality. By having a separate print head then color in and, more importantly perhaps, strengthen and smooth over the object as well as add things such as conductivity, the resulting object would look nice as well. This could be a potential breakthrough in expanding 3D printing.

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.