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Open Hardware/Modding Projects

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Development
Hardware
  • ANAVI Gardening uHAT adds soil and other sensors to Raspberry Pi (Crowdfunding) - CNX Software

    We’ve been covering and reviewing ANAVI open-source hardware boards for several years now, either standalone boards based on ESP8266, or add-on boards for Raspberry Pi.

    The ANAVI Gardening uHAT is the latest board from Leon Anavi. It is a micro HAT designed for Raspberry Pi Zero to Raspberry Pi 4 SBCs that offers interfaces for soil sensors and other environmental sensors allowing measurements of soil moisture, atmospheric pressure and humidity, temperature with a waterproof sensor, and light intensity for gardening applications.

  • ZB-GW03 ESP32-based Ethernet Zigbee gateway works with Tasmota firmware - CNX Software

    ZB-GW03 is an Ethernet Zigbee Gateway compatible with eWelink mobile app and with a design similar to SONOFF ZBBridge gateway but replacing ESP8266 SoC by ESP32 SoC, and adding an Ethernet port.

    The ZB-GW03 gateway is apparently based on the same Silicon Labs EFR32MG21 Zigbee Arm Cortex-M33 chip and has been hacked to run Tasmota open-source software for people preferring more flexibility and/or integration with OpenHAB or Home Assistant open-source home automation frameworks via Zigbee2MQTT.

  • Arduino Orchestra Plays The Planets Suite | Hackaday

    We’ve seen a great many Arduino synthesizer projects over the years. We love to see a single Arduino bleeping out some monophonic notes. From there, many hackers catch the bug and the sky is truly the limit. [Kevin] is one such hacker who now has an Arduino orchestra capable of playing all seven movements of Gustav Holst’s Planets Suite.

    The performers are not human beings with expensive instruments, but simple microcontrollers running code hewn by [Kevin’s] own fingertips. The full orchestra consists of 11 Arduino Nanos, 6 Arduino Unos, 1 Arduino Pro Mini, 1 Adafruit Feather 32u4, and finally, a Raspberry Pi.

  • 3D Printed Research Robotics Platform Runs Remotely | Hackaday

    By patching Ubuntu Linux, and enabling preemptive multitasking for real-time scheduling, as well as carefully selecting Wi-Fi drivers, it was possible to get raw packets out to robot in about 1 ms, enabling control loop bandwidths of around 1 Khz. And, that, was fast enough to run at least sixteen motors in parallel.

  • Automated Window Blinds Using MQTT And Home Assistant | Hackaday

    Finnish software engineer [Toni] is on a quest to modernize his 1991 house, and his latest project was to automate the window blinds and control them using Home Assistant. Unless your blinds have built-in motors, most of the effort of such a project centers around how to integrate and attach the motor — and as [Toni] points out, there are tons of different blinds with all kinds of operating mechanisms. But once you solve that issue, half the battle is over.

    These particular blinds require less than one turn of the control rod to go from fully open to fully closed, and [Toni] selects a 270-degree range-of-motion, 20 kg*cm torque servo motor to drive them. He really wanted to install the motor inside the window, but it just wouldn’t fit. Instead, each servo motor is mounted in a custom 3D-printed case installed on the window frame just below the operating rod. An ESP8266-based controller box is installed above the window, hidden behind curtains, and operates all three servos.

More in Tux Machines

Flatpak App of the Week: Extension Manager – Browse and Install GNOME Shell Extensions

Extension Manager is a very simple app that does one thing (and does it good), to mirror the content of the GNOME Extensions website at extensions.gnome.org. The application lets you easily manage your installed GNOME Shell extensions, similar to what the official GNOME Extensions app does, but it also lets you browse the extensions.gnome.org website straight from within the app if you want to install more extensions on your GNOME desktop. Read more

today's leftovers

  • Custom Piano Tickles the Ivories

    This electronic keyboard is completely designed and built from scratch, including the structure of the instrument and the keys themselves. [Balthasar] made each one by hand out of wood and then built an action mechanism for them to register presses. While they don’t detect velocity or pressure, the instrument is capable of defining the waveform and envelope for any note, is able to play multiple notes per key, and is able to change individual octaves. This is thanks to a custom 6×12 matrix connected to a STM32 microcontroller. Part of the reason [Balthasar] chose this microcontroller is that it can do some of the calculations needed to produce music in a single clock cycle, which is an impressive and under-reported feature for the platform.

  • Hacking A Proper Dash Into The Tesla Model 3 | Hackaday

    The build relies on a CANserver, an ESP32-based device specifically built for hooking up to the CAN bus on Tesla vehicles and sharing the data externally. The data can then be piped wirelessly to an Android phone running CANdash to display all the desired information. With the help of an aftermarket dash clip or a 3D printed custom mount, the phone can then be placed behind the steering wheel to display data in the usual location.

  • Firefox Nightly: These Weeks in Firefox: Issue 108
  • Celebrating Data Privacy Day

    Happy International Data Privacy Day! While January 28 marks a day to raise awareness and promote best practices for privacy and data protection around the world, we at Mozilla do this work year-round so our users can celebrate today — and every day — the endless joy the internet has to offer. We know that data privacy can feel daunting, and the truth is, no one is perfect when it comes to protecting their data 24/7. At Mozilla though, we want to make data protection feel a bit easier and not like something else on the never-ending life to-do list. We build products that protect people online so they can experience the best of the web without compromising on privacy, performance or convenience. The internet is too good to miss out on — we’ll take care of securing it so you can focus on exploring and enjoying it. To accomplish this, we started with square one: our Firefox browser — enhancing its privacy and tracking protections over the past year, while improving its user experience to make surfing the web less dangerous and more carefree. [...] Despite how it sounds, you don’t need to be a hacker to make use of an encrypted connection. Whether you’re online shopping or want to make sure your login credentials are safe from attackers, we’re working on ensuring your browsing experience is secure from start to finish. That’s why, when you open up a Private Browsing tab on Firefox, you can be confident that your information is safe thanks to our HTTPS by Default offering, which ensures the data you share with and receive from a website is encrypted and won’t be able to be intercepted, viewed or tampered with by a hacker. To take this one step further, we’re also working with Internet Service Providers like Comcast and other partners through our Trusted Recursive Resolver program, to begin making DNS encryption the default for Firefox users in the US and Canada.

  • Abuse & Sex Crimes at FOSDEM and Open Source tech events

    All these people have conflicts of interest. For example, Molly herself was secretly sleeping with Chris Lamb when he was leader of Debian. Imagine a woman comes to Molly's team to make an abuse complaint about Lamb or one of his close friends. [...] Women trusting women simply because they are women is not a good choice. There are numerous examples of women like Molly who have been sympathetic to or even in cahoots with male abusers.

  • What is MongoDB, and how does it work? | FOSS Linux

    MongoDB is the most common and widely used NoSQL database. It is an open-source document-oriented DB. NoSQL is used to refer to ‘non-relational’. This means that the MongoDB database is not based on tabular relations like RDBMS as it provides a distinct storage and data retrieval mechanism. The storage format employed by MongoDB is referred to as BSON. The database is maintained by MongoDB Inc. and is licensed under the Server-Side Public License (SSPL).

Programming Leftovers

  • #28 PrintScrn · This Week in GNOME

    Update on what happened across the GNOME project in the week from January 21 to January 28.

  • Implementing a MIME database in XXXX

    Recently, I have been working on implementing a parser for media types (commonly called MIME types) and a database which maps media types to file extensions and vice-versa. I thought this would be an interesting module to blog about, given that it’s only about 250 lines of code, does something useful and interesting, and demonstrates a few interesting xxxx concepts. The format for media types is more-or-less defined by RFC 2045, specifically section 5.1. The specification is not great. The grammar shown here is copied and pasted from parts of larger grammars in older RFCs, RFCs which are equally poorly defined. For example, the quoted-string nonterminal is never defined here, but instead comes from RFC 822, which defines it but also states that it can be “folded”, which technically makes the following a valid Media Type:

    text/plain;charset="hello
     world"
    
    Or so I would presume, but the qtext terminal “cannot include CR”, which is the mechanism by which folding is performed in the first place, and… bleh. Let’s just implement a “reasonable subset” of the spec instead and side-step the whole folding issue.1 This post will first cover parsing media types, then address our second goal: providing a database which maps media types to file extensions and vice versa.

  • gst-editing-services compiled in OE

    I discovered that 'gst-editing-services' is another dependency of Pitivi, added to these: https://bkhome.org/news/202201/more-dependencies-for-pitivi-video-editor.html There is no recipe in OE, so I attempted to compile it on the host system. Stuffed around for about 3 hours, unable to compile, ninja is doing something stupid.

  • More dependencies for Pitivi video editor

    This morning I posted about a complete recompile in OpenEmbedded, "revision 7": https://bkhome.org/news/202201/what-to-expect-in-the-next-release-of-easyos.html This included bumped gstreamer version, suitable to run Pitivi.

  • Wasmer 2.2 Bringing Its WebAssembly "Singlepass" Compiler To AArch64 - Phoronix

    Wasmer 2.2-rc1 is out today as the WebAssembly run-tme to "run any code on any client" with its broad platform coverage and allowing numerous programming languages from Rust to PHP to C# being able to be compiled into WebAssembly and then running on any OS or embedded into other languages for execution. Wasmer continues as one of the leading open-source WebAssembly runtimes with a diverse feature-set. Its project site at Wasmer.io talks up Wasmer for use from "supercharged blockchain infrastructure" to "portable ML/AI applications". Buzzwords aside, Wasmer has been a very interesting WebAssembly open-source project.

  • Alternatives to Visual Basic

    This is a list of free/libre open source software (FLOSS) alternatives to Visual Basic (part of Microsoft Visual Studio) computer programming platform. If your school is still teaching VB 6, or if you now use Ubuntu for programming classroom, we strongly suggest you to switch to either one of these alternatives. With these, one can create computer programs visually by drag and drop as well as coding just like what one can do with VB.

Graphics: DXVK-NVAPI, Wayland, Resizable BAR

  • DXVK-NVAPI 0.5.2 Released With Entry Points For NVIDIA PhysX - Phoronix

    DXVK-NVAPI as the open-source project implementing support for NVIDIA's NVAPI within the realm of DXVK is out with a new release, which is exciting for NVIDIA Linux gamers. DXVK-NVAPI is an important project for NVIDIA Linux gamers enjoying Valve's Steam Play (Proton) or outside of it as well if using DXVK otherwise. DXVK-NVAPI provides an NVAPI library implementation that can be used by the Windows games that make use of this NVIDIA API. DXVK-NVAPI is already used for Deep Learning Super Sampling (DLSS), NVAPI D3D11 extensions, and other features.

  • Wayland Testing New Protocol Extension To Handle Session Locking - Phoronix

    Wayland Protocols 1.25 was released today as the collection of testing and stable Wayland protocols. New to Wayland Protocols 1.25 is the session-lock-v1 protocol being experimental and responsible to handle session locking. The session-lock-v1 protocol is the main addition of Wayland Protocols 1.25 and allows for privileged Wayland clients to lock the session and display arbitrary graphics while in the locked mode. That authenticated client is responsible for handling user authentication and interfacing with the compositor for disabling the session lock when appropriate.

  • Intel Preparing Resizable BAR Support For Their Arc Graphics On Linux - Phoronix

    Ahead of the Intel Arc "Alchemist" graphics cards shipping this year, Intel's open-source developers have continued ironing out the Linux driver support. The most recent kernel patches are for getting their Resizable BAR "ReBAR" support in order. Sent out this week were a set of patches for small BAR recovery support for the Intel kernel graphics driver on Linux.