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Open Hardware and ARM

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Hardware
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  • Designing open audio hardware as DIY kits

    Previously in this series about people who are developing audio technology in the open, I interviewed Juan Rios, developer and maintainer of Guayadeque and Sander Jansen, developer and maintainer of Goggles Music Manager. These conversations have broadened my thinking and helped me enjoy their software even more than before.

    For this article, I contacted Håvard Skrödahl, founder of Muffsy. His hobby is designing open source audio hardware, and he offers his designs as kits for those of us who can't wait to wind up the soldering iron for another adventure.

    I've built two of Håvard's kits: a moving coil (MC) cartridge preamp and a moving magnet (MM) cartridge phono preamp. Both were a lot of fun to build and sound great. They were also a bit of a stroll down memory lane for me. In my 20s, I built some other audio kits, including a Hafler DH-200 power amplifier and a DH-110 preamplifier. Before that, I built a power amplifier using a Motorola circuit design; both the design and the amplifier were lost along the way, but they were a lot of fun!

  • Nuvoton Launches Brand New M261/M262/M263 Series MCUs for IoT Applications

    Low power and robust security are two major requirements for the Internet of Things (IoT) applications. In terms of low power consumption, NuMicro M261/M262/M263 series provides multiple power modes for different operating scenarios, integrating RTC with independent VBAT to support low power mode. The power consumption in normal run mode is 97 μA/MHz (LDO mode) and 45 μA/MHz (DC-DC mode). Standby power-down current is down to 2.8 μA and Deep power-down current is less than 2 μA. The low power, low supply voltage, and fast wake-up (9 μs from Fast-wakeup Power-down mode) features make M261/M262/M263 series suitable for battery-powered IoT applications.

    The robust security functions of NuMicro M261/M262/M263 series include secure boot function to ensure that a device boots using only trusted software through a series of digital signature authentication processes. The M261/M262/M263 series integrates complete hardware crypto engines such as AES 256/192/128, DES/3-DES, SHA, ECC, and True Random Number Generator (TRNG). Furthermore, it provides 4-region programable eXecute-Only-Memory (XOM) to secure critical program codes and up to six tamper detection pins against outer physical attack, which significantly improves the product security.

    [...]

    Third-Party IDEs such as Keil MDK, IAR EWARM, and NuEclipse IDE with GNU GCC compilers are also supported.

  • Arm, WDC and Qualcomm Announce OpenChain Conformance Activities

    Arm and Western Digital Corporation, Platinum Members of the OpenChain Project and key participants in the global supply chain, today announce conformance with the OpenChain Specification. Qualcomm Technologies, Inc., Platinum Member and founding contributor of the OpenChain Project, today announces expanded conformance to the latest version of the OpenChain Specification.

    The OpenChain Project establishes trust in the open source from which software solutions are built. It accomplishes this by making open source license compliance simpler and more consistent. The OpenChain Specification defines inflection points in business workflows where a compliance process, policy or training should exist to minimize the potential for errors and maximize the efficiency of bringing solutions to market. The companies involved in the OpenChain community number in the hundreds. The OpenChain Specification is being prepared for submission to ISO and evolution from a growing de facto standard into a formal standard.

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.