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Open Hardware Leftovers

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Hardware
  • How I Built a Homelab on the Budget

    In my previous article, I discussed what is a Homelab and why you should (or should not) have one for yourself.

    Now, can anyone who wants or need, have a homelab? It depends on several things but money or resources can be worked around. In this article, I will explain how I have managed to have my own Homelab without investing a fortune in it. As a matter of fact, it costed me less than US $1,000 and it works good enough to manage my home's infrastructure requirements.

    That being said, it is important to mention as a disclaimer: this article doesn't describe the best way to do things. It just describes how I manage to make it work even knowing there are some issues and risks with it but for now, I am fine to live with these.

  • Want Octoprint But Lack A Raspberry Pi? Use An Old Android Phone | Hackaday

    3D printers and Octoprint have a long history together, and pre-built images for the Raspberry Pi make getting up and running pretty easy. But there’s also another easy way to get in on the Octoprint action, and that’s to run it on an Android phone with the octo4a project.

  • This Raspberry Pi Mini ITX Board Has Tons Of IO | Hackaday

    The Raspberry Pi now comes in a wide variety of versions. There are tiny little Zeros, and of course the mainstream-sized boards. Then, there’s the latest greatest Compute Module 4, ready to slot on to a carrier board to break out all its IO. The Seaberry is one such design, as demonstrated by [Jeff Geerling], giving the CM4 a Mini ITX formfactor and a ton of IO. (Video embedded after the break.)

    The Seaberry sports a full-sized x16 PCI-E port, with only 1x bandwidth but capable of holding full-sized cards. There’s also four mini-PCI-E slots along the top, with four M.2 E-key slots hiding underneath. The board then has a M.2 slot in the middle for NVME drives, and x1 PCI-E slot hanging off the side.

  • 2021 Open Source Pay-it-Forward Pi Giveaway

    To solve both problems, I'm doing a giveaway—to enter to win one of any of the pictured items below (and maybe a few others I can find lurking in my office), just donate or say thank you to any open source project or maintainer, then submit your entry.

  • Mini-ITX Seaberry adds 11 PCIe slots to a Raspberry Pi

    But it's definitely a specialty board. People who need a low-power ARM-based development or experimentation platform could use this board like I do, to test more exotic configurations on the Pi. And it's looking like it will be the first commercially-available (though not cheapest) ways to install a Pi into a standard desktop or rackmount PC case, since it's mini ITX.

  • xa 2.3.12

    I've updated xa, André Fachat's venerable 6502 cross-assembler, to version 2.3.12. This contains a bug fix for a regression in 65816 mode which I'd meant to release earlier but got sidetracked on (thanks Samuel Falvo for the nice test case, which is also incorporated into the suite). As with prior versions it is tested on pretty much all of my Un*x-alike systems here including AIX, Mac OS X (PowerPC, Intel and Apple Silicon), NetBSD/mac68k and Linux/ppc64le. I said this before for 2.3.11 but one more time for the record: this will probably be the last in the exceptionally long-lived 2.3 series before 2.4, which as I keep warning you will definitely have some minor compatibility breaks and jettison a couple long-deprecated options and syntaxes (but will have some new features to make up for it). Again, more to come on that.

More in Tux Machines

Review: UBports on the PinePhone

At the end of 2021 I posted a review about the PinePhone and what it was like running the device's default operating system: Manjaro Linux featuring the Plasma Mobile interface. While I've had decent experiences with Plasma Mobile in the past, the combination of Manjaro, the PinePhone, and this interface left a lot to be desired. It was slow, it was unstable, and there were issues with the battery charge indicator. To make matters worse, the default applications were not polished or well named. It was a rough experience and, though I can see where there is hope for Manjaro on the PinePhone, I was eager to try something different. In the past I have had mostly good experiences with the UBports distribution. UBports is a community project which has continued Canonical's Ubuntu Touch operating system for smart phones and tablets. Since I've run UBports on devices which didn't have any more memory or processing power than the PinePhone, I was optimistic about trying out the PinePhone with this alternative distribution. Read more

Switching from OpenNTPd to Chrony

A friend recently reminded me of the existence of chrony, a "versatile implementation of the Network Time Protocol (NTP)". Read more

today's howtos

  • How to Enable MySQL/MariaDB Query Logging

    In this short and easy to follow guide, we cover how to enable MySQL/MariaDB query logging and save queries to a file. When using a database, it often happens that developers want to know what’s going on behind the scene. Whether it is for troubleshooting, performance tuning, or out of sheer curiosity. General query logs remain one of the most popular sources of auditing and diagnostic information in MySQL/MariaDB databases. After logging is enabled, the database server will write information to the log file when clients connect or disconnect, and it will log each SQL statement.

  • How to install Zotero on Ubuntu 22.04 or 20.04 LTS - Linux Shout

    Zotero is a reference management system and academic network, here we learn the steps to install Zotero in Linux such as Ubuntu 22.04 Jammy JellyFish or Ubuntu 20.04 Focal Fossa. Zotero is an open-source and free tool that helps in collecting, organizing, citing, and sharing research. It consists of two components: Zotero standalone (Mac, Windows, Linux) with a plugin for Firefox, Google Chrome, and Safari; Zotero web application: computer-independent access to your library, finding and setting up groups on specific topics (see collaboration), making contacts with others. The two components of this tool can be synchronized with each other. If you are often involved in extensive projects at work or have to write a large-scale work during your studies, you quickly lose track of the sources used. With Zotero, you keep all information together and create a clear library for your project without much effort. It is particularly suitable for literature research on the Internet and the direct transfer of the researched data and works in groups that want to manage literature together.

  • How to Copy Directory in Linux: (Beginner to Advance)

    While working in several operating systems, we use to add files and folders, cut, copy, edit and delete them as per our choice. Just like all these, the Linux system provides us the opportunity to copy a single folder to another folder even though the folder is empty or not. Therefore, we will discuss some easy methods to copy one directory to another in Ubuntu 20.04 system. Let’s have a fresh start by using the different ways to copy a directory from one place to another in Linux. For this particular purpose, we must open up the terminal shell as we are going to do all things in it. There are two ways to open it. One is from the activity search area and the other is the shortcut key “Ctrl+Alt+T”. Practice one of the mentioned methods to open it and start implementing the commands in it one by one.

  • How to Change Default Torrent Client for Magnet Links in Ubuntu 20.04+ | UbuntuHandbook

    When clicking a magnet link in Chrome browser, it pops-up with “Open xdg-open” option allows to launch the default app to start the downloading. Unlike Firefox, Google Chrome does not offer an option to choose which app to handle the link. Instead, it launches the default app directly. For those want to change this default app to handle magnet links, here’s how to do the trick in Ubuntu.

  • How to install Microsoft Fonts on Elementary OS 6.0 - Invidious
  • How to install VCV Rack 2 on a Chromebook

    Today we are looking at how to install VCV Rack 2 on a Chromebook. Please follow the video/audio guide as a tutorial where we explain the process step by step and use the commands below.

  • How to Install Papirus Icon Theme on Ubuntu - OMG! Ubuntu!

    Changing the icon theme on Ubuntu is an easy way to give your desktop a new look and feel. In this post we show you how to install Papirus icons on Ubuntu from a PPA. Why use the Papirus icon set? Because it’s good — in fact, it’s one of the best icon themes for Ubuntu not to mention other Linux distros like Linux Mint, Zorin OS, and Manjaro. Thousands of users use this set, and several Linux distributions ship it as their default.

  • Exploring GIT Commit Hashes & Generating Cryptographic Zeros – Jon's FOSS Blog

    So I was trying to research what goes into generating a GIT commit hash and I thought I would try to personalize the cryptographic hash output a little bit. My computer isn’t that powerful but it may be possible to generate more zeros!

Keyboards and Open-Source - Ignorance is bliss..

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In my Keyboard Fun post from last year I talked a bit about my interest in mechanical keyboards. Since then, I played around with a few more keyboards/switches/keycaps/… Interesting enough, beside the actual hardware, naturally there is some software component to all these keyboards, too. Whereas most commercial keyboards still come with proprietary firmware, there is the trend within the keyboard enthusiast scene to go for open-source firmware. This allows you to properly update the firmware even from your Linux machine and do proper configuration of e.g. the keymap, too. Read more