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Open Hardware/Modding: Home Assistant With Raspberry Pi, Arduino Projects

  • Home Assistant for a Newbie

    Getting started with Home Assistant, you are presented with lots of options and there is a plethora of opinions to steer you in the “right” direction. The problem I had is that I was paralyzed by the options and, as a consequence, set back my adoption of Home Assistant in my everyday life. In an effort to make this as absolutely as simple and as easy as possible for the user, brand new to this. I am writing an incomplete guide for which I will plug in the other bits in separate articles. For this, I will focus on how I started with the bits of home automation tech I already had sitting in a plastic flip top tote. There is no knowledge of Docker or Virtual Machines required to make this work.

    To some degree, all home automation is a kind of science experiment. Even if you buy into the latest and greatest system with all the “big-tech” endorsement, they too have their points of failure. I would also argue that their points of failure are far more catastrophic than a self hosted, Home Assistant solution.

    Before taking on any sort of home automation, be mindful that you are taking on a technical liability. There is no computer or no appliance that is self maintaining. Like any computer system, this will require updates and occasional intervention.

  • This 3D-printed, Arduino-controlled kit makes microfluidic pumps more accessible | Arduino Blog

    In circumstances where extreme precision is required when dealing with the movement of microscopic amounts of liquids, such as lab-on-a-chip (LoC) and organs-on-a-chip (OoC) systems, obtaining a pump that is both cheap and accurate is nearly impossible since they often cost several thousands of dollars to procure or are too bulky. To combat this problem, a team from the Singapore University of Technology and Design Soft Fluidics Lab created a custom solution that can be fabricated with off-the-shelf 3D printers.

    The device they came up with relies on a single Arduino Micro to control the flowrate of the pump by adjusting the speed of the connected motor. There is also an optional OLED that can be added that lets users see the exact flowrate which has been selected. Altogether, this DIY pump system is capable of moving a mere 0.02 microliters up to 727.3 microliters per minute with a footprint of around 20mm by 50mm. Perhaps best of all, this project can be easily sent as a kit and built onsite with incredible speed, further reducing the cost to use it.

  • A DIY digital clock with a twist | Arduino Blog

    The digital clock has existed in its current form for decades at this point, so it’s quite exciting to see when a new take on the classic design comes along. The Time Twister 5, created by Hans Andersson, is a fully 3D-printed electromechanical clock that twists certain blocks into place, which make up digits to display the current time.

    Each block consists of five distinct layers, where each layer is a triangular prism with three outer faces. These faces come in a total of five different patterns and are arranged in such a way that any digit from zero up to nine can be represented by simply turning the correct layer(s) a certain amount. The internal electronics — including the Arduino Mega, DS3231 real-time clock module, sensor shield, and power circuitry — are all housed in the gold-colored base. Each layer is stacked upon three metal rods for support and contains a single micro servo that twists planetary gears to move the outside while keeping the inside stationary.

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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.