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Open Hardware/Modding Leftovers

Submitted by Roy Schestowitz on Tuesday 5th of April 2022 12:23:15 PM Filed under
Hardware
  • Exploring cross-disciplinary computing education in our new seminar series
  • Pimoroni Announces Servo 2040 Servo Motor Controller

    Although it's slightly weird-looking, we’re fairly sure that the image above is not an April Fool prank. UK-based seller of useful things Pimoroni has taken to Twitter to announce the Servo 2040, an 18-channel servo controller “for making things with lots of moving parts”.

    Servo 2040, as you might expect, is a standalone servo controller making use of the RP2040 microcontroller chip seen in the Raspberry Pi Pico. There are enough pre-soldered pin headers to connect up to 18 servos, current monitoring functionality to keep an eye on power consumption, and six addressable LEDs for visual feedback. You also get pin headers for up to six analog sensors for checking that you're not applying too much pressure to your test subject's head.

  • [Old] The making of a PCB: Part 1

    For some time now, we've wanted to have a Printed Circuit Board (PCB) that we could use to demonstrate Drogue Device and Drogue Cloud. This is the first post in a series of post telling the tale of this journey.

  • The making of a PCB: Part 2

    Throughout these two blog posts, we've seen the steps we took starting from the initial drawing to a potential large scale manufacturing of a fully assembled PCB, including additional equipment to program the devices. A lot of trial and error is expected when trying something new, but we got something that worked in the end. With KiCad, there is a lot of open hardware

  • Reverse-engineering a mysterious Univac computer board

    The IBM 1401 team at the Computer History Museum accumulates a lot of mystery components from donations and other sources. While going through a box, we came across the unusual circuit board below. At first, it looked like an IBM SMS (Standard Modular System) card, the building block of IBM's computers of the late 1950s and early 1960s.1 However, this board is larger, has double-sided wiring, the connector is different, and the labeling is different.2

  • DEC Rainbow 100B Power Supply Specs

    Most ATX power supplies supply more 5V and less 12V than is needed for the Rainbow to power the system. However, the 12V supplies are in large part for the older disk technology in the Rainbow and if you are using emulators you can get by with a little less, though how much less is TBD.

  • Power Consumption Of A Philips Hue lamp In Off State

    A Philips Hue lamp is a LED lamp that can be controlled wirelessly. It always draws power for its control circuitry, also when the LED is turned off.

    I wondered how much power it consumes in the off state. Doing some research, I found a couple of forums where people asked the same question, and getting answers that is was very little, varying from 0,01 A to 0,02 A.

»

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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.

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