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GNU/Linux on Raspberry Pi 4/400 and Rtlduino

Filed under
Hardware

  • Two Displays & Two Computers

    In my messy office I have a main desk I work at. I have two portait displays on a hefty, but inexpensive BONTEC Dual Monitor Stand (affiliate link), clamped to the back, to lift the monitors up off the desk. The monitors are 3-year-old, low-end 24” ASUS VS248HR (affiliate link) “Gaming Monitor’s”.

    I recently bought a Raspberry Pi 400 which also sits on my desk for quick-release arm64-action! The problem I have had with other Pi’s is the spiders web of cables needed, and additional keyboard. So when the Pi 400 came out, with integral keyboard, and ports all aligned at the back, I snagged one.

    I like not having to unplug/replug cables when switching devices, but rather just grab the machine and start playing. The ASUS monitors only have one HDMI port each, and I like using both monitors. I’d also like to sometimes use two monitors on the Pi. I don’t have room or money for four monitors! So I needed an easy solution.

  • First bootup EasyOS aarch64 on Pi 4

    Having got the packages together and a kernel compiled, I used woofQ to build an SD-card image, EasyOS 0.105.

    Booted it on the Pi, mouse and keyboard dead in the initrd -- well, that is not new, had same thing with the Pi3.

  • WiFi 6 is not faster than Ethernet on the Raspberry Pi

                     

                       

    In this post I'll describe how testing this $20 M.2 WiFi adapter card suggested by Javier Choclin led to me learning a lot about Linux's wireless networking stack.

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  • $6 Rtlduino RTL8720DN dual-band WiFi IoT board features 2.4/5GHz Wireless MCU

    There are plenty of WiFi modules for the IoT market, but those usually work at 2.4 GHz only. This may be an issue in areas where the 2.4 GHz spectrum is overcrowded. But two years ago, we were pleased to see the Ameba Z2  board offering dual-band (2.4GHz and 5Ghz) WiFi thanks to Realtek RTL8720CM wireless MCU, and last year, we discovered B&T BW16 dual-band IoT module based on RTL8720DN sold for under $4 before shipping.

    If you like the cheap price of the module, but do not feel like creating your own baseboard, or soldering wires to the module, you’ll be glad to know Rtlduino RTL8720DN board offers an easy way to evaluate RTL8720DN dual-band WiFi (and Bluetooth LE 5.0) microcontroller as it is fitted with a B&T BW16 module and comes in a form factor similar to NodeMCU ESP8266 board.

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More in Tux Machines

Why it's a good thing that the Linux desktop is boring again

Hopefully the title has piqued your interest, as that was the intent. With the upcoming release of GNOME 40, I've found myself in a rather contemplative and nostalgic mood lately. I remember, back in the early 2000s, I'd read about a new desktop in development called GNOME. Curiosity got the best of me and installed the beta version of the environment. If I'm being honest, I wasn't impressed. My formative years with the Linux desktop were spent using the likes of AfterStep and Enlightenment E16. If you know either of those desktops (or Window Managers) you get it. Both of them were exceptionally configurable and could be made to look absolutely gorgeous. At one point, I had AfterStep tricked out to the point where everything was varying degrees of transparency and the window decorations were as much sculpture as they were code. When people saw my desktop, they were astonished. It was a work of art. Read more

NomadBSD 1.4 is now available!

We are pleased to present the release of NomadBSD 1.4. Read more

Games: Koi Farm, Vintage Story, and Valheim

  • Koi Farm is a simple relaxing chill-out experience about raising fish

    Koi Farm released recently and it's quite a little gem. It's a small game though, all about raising Koi with an "infinite number" of patterns you can create by cross-breeding all the different colours and you end up with lots of different mutations as you go along. You can pick them up, drop them between a big display pool and a smaller breeding pool and eventually let them go to swim on with their lives. On top of that, you can also turn them into special cards to stick in your book and progress through it.

  • Survival game Vintage Story gets an official mod database, improved Wayland support

    Out for your next survival game that isn't Valheim? Do give Vintage Story a go, which on the surface looks like Minecraft but it's so much more interesting and far deeper mechanically. While this is mainly a stability update for the previous release, which was pretty huge, some fun bits have been put in. One of the big additions is an official Mod Database, for players to upload and download from. Eventually, they said, it will integrate with the game client to "blur the line on what is vanilla content and what is modded content" (if you want to use it, that is). The rest of the update is mostly small tweaks and fixes but their support of Linux continues shining. For Linux players, you should hopefully see improved support for running the game on Wayland. They upgraded the version of OpenTK used along with some extra Wayland fixes that should improve mouse support there. See the full changelog here. [...] A community member is also hosting a server for Linux fans...

  • The tenth Norse world sure is busy as Valheim hits 5 million sold | GamingOnLinux

    Fully expected of course, Valheim continues pulling in masses of new users with the announcement that it's now sold 5 million copies over the first month. What is it? For those living under a rock: a brutal exploration and survival game for 1-10 players, set in a procedurally-generated purgatory inspired by Viking culture. Across this time more than 15 thousand years have been spent playing Valheim based on a combined player time count, over 35 million hours of Valheim was watched on Twitch, it continues rising up as one of the best reviewed games on Steam (#39) and this is all still from a five-person team. The actual player-count seems to have now settled though from the 502,387 peak 10 days ago to it seeing a more regular player count of around 350,000.

today's howtos

  • Openstack RDO && KVM Hypervisor: Install intellij-idea on Fedora 33 via COPR Repository

    Procedure below works quite smoothly and eliminates any issues during similar manual setup which is available as well via `sudo dnf install openjfs`. First enable COPR Repository and perform install $ sudo dnf copr enable lkiesow/intellij-idea-community$ sudo dnf install intellij-idea-community During the very first run you will be given an option to install the most recent Oracle's JDK ( second snapshot )

  • How to Install a Specific Kernel Version in CentOS

    The Linux Kernel is the underlying core of all GNU/Linux distributions. The kernel, GNU standard programs, and additional programs and GUI on top of them make up a GNU/Linux operating system. CentOS is one such popular GNU/Linux operating system that comes under the RedHat family of Linux distributions. As the Linux kernel grows in size, more and more resources are spent in its development; mainly to incorporate support for newer hardware, amongst other things. However, there can be scenarios when an upgraded Kernel version is giving certain errors on a piece of hardware. There can be cases also when you want to test an older version of the kernel for compatibility purposes.

  • Tips for using tmux | Enable Sysadmin

    Prior to Red Hat Enterprise Linux 8, the screen command was included. In version 8, the decision was made to deprecate screen and use tmux instead. tmux is a terminal multiplexer which means that you’re able to have a process running, disconnect from the system, and then reconnect at a later time and from a different computer so that you can continue working in that process. An easy way to demonstrate this is to SSH to a remote system, start tmux, and then from inside of that, start a ping command to a remote system, disconnect from tmux, resume tmux, and you’ll see that the ping is still going.

  • Tips for using screen | Enable Sysadmin

    What happens when you’re connected to a remote system, using a long-running program, and then the connection drops? The odds are, at a minimum, you’re going to have to restart the program, and in a worst-case scenario, you’ll have data corruption. To help get around this, some programs run in a window shell on the system.

  • How to Install the YouTube Add-on in Kodi - LinuxBabe

    In a previous tutorial, we explained how you can install LibreELEC on a Raspberry Pi to set up a home media server and replace your smart TV OS. This tutorial is going to show you how to install the YouTube add-on and set up YouTube API in Kodi.

  • How to enable LUKS disk encryption with keyfile on Linux - nixCraft

    We can easily add a key file to LUKS disk encryption on Linux when running the cryptsetup command. A key file is used as the passphrase to unlock an encrypted volume. The passphrase allows Linux users to open encrypted disks utilizing a keyboard or over an ssh-based session.

  • How to use Bootable USB drive in VMware Player to install OS

    If you want to boot your Virtual Machine running on VMware Workstation Player using a bootable USB drive for the installation of Windows 10/8/7 or Linux (Ubuntu, Linux Mint, CentOS, etc.) operating system. Then here are the simple steps to follow… Whether it is Vmware Workstation Player or VirtualBox when it comes to installing an operating system for VM, most of the time we use ISO files. However, imagine you already have a bootable USB drive of some OS but not the ISO file for the same and you want to install it for a Virtual machine created in VMware. What will you do? The answer is straightforward; we will use the option of VMware to boot from Physical Disk, and here i.e. a USB disk drive attached to PC.

  • How to Dual Boot Ubuntu Linux and Windows 10 with BitLocker Encryption

    Laptops and desktops with Windows 10 Pro version come with BitLocker encryption enabled by default.