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Open Hardware/Modding: Raspberry Pi, Arduino and More

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Hardware
  • Teaching pigeons with Raspberry Pi
  • Helium Hotspot LoRaWAN Gateway also Earns Cryptocurrency

    A Helium Hotspot is a LoRaWAN gateway that also allows you to earn HNT cryptocurrency, and it could more than just prove a way to fund the deployment of public LoRaWAN networks, as as we’ll see below some people or companies are making some serious money, while others not so much. A DIY Helium Hotspot can also be made from a Raspberry Pi 3/4 and a RAK2245 Pi HAT.

    There’s no mention of the LoRa module used, but there are instructions to build an Helium Hotspot with a Raspberry Pi 3/4 and RAK2245 Pi HAT, and the source code is on Github. Considering Helium Hotspot is only currently available in some countries, and it costs 450 Euros to purchase, make your own look like an interesting proposition, except I was told DIY gateways cannot participate on the blockchain yet, but that something that should change next month (September 2020).

  • Alibaba Reports Their XT910 RISC-V Core To Be Faster Than An Arm Cortex-A73

    A few weeks back Alibaba announced the "XT910" as the fastest RISC-V processor featuring 16 cores and clock speeds up to 2.5GHz while being manufactured on a 12nm node. This by far beats most RISC-V hardware currently available and now at this week's Hot Chips conference the Chinese company is reporting that the XT910 is faster than an Arm Cortex-A73.

  • This Arduino-powered spectrophotometer uses a little prism to create rainbows

    Invented back in the 1940s, a spectrophotometer is a scientific instrument used to measure how different wavelengths of light are absorbed by a sample. Daniel Hingston decided to build his own spectrum analysis device as a fun Arduino experiment, outlined in the project write-up and in the video below.

  • This air hockey robot never loses

    Air hockey is normally a two-player affair, but not for this student-built robot. The table features a designated human goal with a touchscreen GUI for settings and control. The second goal is guarded by an autonomous striker, attached to a pair of steppers using a drive belt arrangement.

    The robotic device analyzes the puck position with an overhead camera and a Raspberry Pi, which passes commands to an Arduino Micro over serial. The Arduino then controls the stepper movements via driver modules, as well as a solenoid to pop the puck out of the robot’s goal on the rare occasion it misses a block.

  • PCIe expansion board packs in 6 PoE ports

    IEI has released the GPOE-6P-R10, a new board in its GPOE series of power-over-Ethernet (PoE) expansion cards. In comparison with IEI’s previous GPOE-2P and GPOE-4P cards, GPOE-6P-R10 has more ports – a total of six x10/100/1000BaseT(X) PoE ports. The board is supported by IEI’s I GPOE Management Tools which run on Windows or Linux.

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.