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Raspberry Pi and Hardware Hacking

Filed under
Hardware
  • Raspberry Pi computers are speeding to the International Space Station
  • Pi in Short Supply: Site Claims 52-Week Wait for 4GB Model

    If you're looking for a Raspberry Pi, particularly a Pi 4 with 4GB, you may have to look harder than usual or prepare to wait. Due to the supply chain issues we've seen Various global reseller listings show that models of the Raspberry Pi 4 are going out of stock, and one site, Digi-Key, claims to have a 52-week "lead" time until it comes back in.

  • Upgrading a motherboard’s BIOS/UEFI (the hard way)

    So here’s where the fun began. I needed to flash the new BIOS version onto the motherboard. I have a CH341A mini programmer that also came with a clip that can be used to hook up directly to 8-pin SOIC chips on circuit boards. You can find these all over Amazon and eBay for pretty cheap. I don’t want to link to them because the links will change over time, but you can search for CH341A programmer and find them. You do have to be careful with them, because at least some of them, including the one I got, have a major design flaw. They correctly power the SPI flash chip with 3.3V, but they provide 5V on the signal wires going to the chip. That would be bad, because typically 3.3V flash chips don’t want to see 5V on any of their pins, not to mention all of the other connected components on the motherboard. A lot of people have had success with these programmers even with the 5V issue, but I wouldn’t trust putting 5V on a pin that’s supposed to have a lower voltage. There is a simple hack you can perform on the board to fix this, which I already did a while ago. You can see my hack wire in the picture below.

  • 20-Year-Old Apple Power Mac G4 Gets M.2 SSD Upgrade, Despite 133 MBps PCI Bus

    Just plugging things in is not enough to make PCIe hardware work with a Power Mac G4. That system for obvious reasons does not support the NVMe protocol used by modern speedy SSDs. But it appears to support the AHCI protocol used by modern hard drives, some PCIe SSDs, and all SATA SSDs. The Power Mac G4 shipped with SCSI or Parallel ATA HDDs, and it looks like Apple used PATA controllers that support AHCI, but we are speculating here. This AHCI support enables the use of PCIe SSDs that use this protocol, such as Samsung's SM951.

  • A Label Maker That Uses AI Really Poorly | Hackaday

    [8BitsAndAByte] found herself obsessively labeling items around her house, and, like the rest of the world, wanted to see what simple, routine tasks could be made unnecessarily complicated by using AI. Instead of manually identifying objects using human intelligence, she thought it would be fun to offload that task to our AI overlords and the results are pretty amusing.

    She constructed a cardboard enclosure that housed a Raspberry Pi 3B+, a Pi Camera Module V2, and a small thermal printer for making the labels. The enclosure included a hole for the camera and a button for taking the picture. The image taken by the Pi is analyzed by the DeepAI DenseCap API which, in theory, should create a label for each object detected within the image. Unfortunately, it doesn’t seem to do that very well and [8BitsAndAByte] is left with labels that don’t match any of the objects she took pictures of. In some cases it didn’t even get close, for example, the model thought an apple was a person’s head and a rotary dial phone was a cup. Go figure. It didn’t really seem to bother her though, and she got a pretty good laugh from the whole thing.

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Dilution and Misuse of the "Linux" Brand

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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

    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.