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274 results for tags hardware x
  • DCF77 clock
    Found via https://www.raspberrypi.com/news/hackspace-magazine-meets-veeb-projects/
    See also https://www.veeb.ch/projects
    Fri Feb 9 20:02:25 2024 - permalink -
    - https://github.com/veebch/clock
    electronics hardware pi raspberry software time π
  • Neo6502 - Open Source Hardware Board
    Neo6502 is small computer with USB keyboard host and HDMI/DVI output.
    Found on https://fosdem.org/2024/schedule/event/fosdem-2024-2093-neo6502-in-the-matrix-open-source-hardware-and-software-modern-retro-computer-with-software-defined-architecture/
    Mon Feb 5 15:40:13 2024 - permalink -
    - https://www.olimex.com/Products/Retro-Computers/Neo6502/open-source-hardware
    6502 computer hardware history pi raspberry π
  • Getting Started with Badger 2040
    Badger 2040 is a programmable E Paper/eInk/EPD badge, powered by RP2040. Badger 2040 W is a programmable E Paper/eInk/EPD badge with 2.4GHz wireless connectivity, powered by Raspberry Pi Pico W. Both can go into a deep sleep mode between updates to preserve battery.
    Fri Jan 12 16:37:17 2024 - permalink -
    - https://learn.pimoroni.com/article/getting-started-with-badger-2040#introduction
    electronics hardware pi raspberry π
  • Oxide Computer Company
    Was mentioned several times on the TUHS and/or COFF mailing lists, I found
    https://news.slashdot.org/story/23/07/29/192248/building-a-better-server-oxide-computer-ships-its-first-rack
    https://blog.jessfraz.com/post/born-in-a-garage/
    The book recommendations on https://blog.jessfraz.com/post/books/ look interesting

    See also https://hubris.oxide.computer/ for Hubris, a small open-source operating system for deeply-embedded computer systems written in Rust.
    Tue Jan 9 10:42:56 2024 - permalink -
    - https://oxide.computer/
    blog book computer FOSS hardware reading Rust software
  • Dipole Calculator | Antenna Length Calculator
    Found via rtl-sdr.com, includes adjustment factor which depends on the diameter of the conductors.
    Mon Jan 8 13:35:57 2024 - permalink -
    - https://www.omnicalculator.com/physics/dipole
    antenna electronics hardware on-line tool
  • 8BitDo Retro Mechanical Keyboard
    Inspired by the classics. Compatible with Windows 10(1903) or above, and Android 9.0 or above.
    Connnect via Bluetooth, wireless 2.4G, or wired.
    87-key layout. Kailh Box Switch V2 White. Dye-sub PBT keycaps.
    Top mount style. Hot-swappable PCB. Support n-key rollover.
    Dual Super Buttons - offer large, programmable keys. Map anything to the Super Buttons instantly without using software.
    Classic power status LED, with independent control panel.
    Supports 8BitDo Ultimate Software V2 for custom keyboard mapping. (Release in September 2023.)

    Found via a link from the Raspberry π blog
    https://www.raspberrypi.com/news/raspberry-pi-5-and-retro-gaming-with-spanish-reviewer-marc/
    Tue Dec 19 18:25:36 2023 - permalink -
    - https://shop.8bitdo.com/products/8bitdo-retro-mechanical-keyboard
    computer hardware keyboard
  • Greaseweazle V4 USB Floppy Adapter – Flux Reader Writer – Ultimate Mister FPGA
    Greaseweazle allows versatile floppy drive control over USB. Read and write your vintage floppy disks from your PC/Linux/Mac computer. This USB device lets you to connect an old floppy disk drive to your modern computer to read/write floppy disks from any system with Shugart standard drives (Amiga, Atarí, Commodore, Amstrad, Sinclair, PC, CNC machines, musical instruments, industrial equipment, and more.)

    By extracting the raw flux transitions from a drive, any disk format can be captured and analyzed. The Greaseweazle also supports writing to floppy disks, from a range of image file formats including those commonly used for online preservation (ADF, IPF, DSK, IMG, HFE, …).

    Greaseweazle V4 is the latest version, updated for mass production and with the following features:

    Reads and writes 3″, 3.5″, 5.25″, 8″ disks (with suitable drive and cable)
    Buffered outputs, for communicating with older 5.25″ and 8″ disk drives
    Integrated power connector for directly powering most 3.5″ disk drives
    Write-enable jumper can be removed for safer preservation of precious vintage disks
    Supports floppy-modded 5.25″ drives
    Supports Disk-Change detection as used by Rob Smith’s integration into the WinUAE Amiga emulator
    3 user-definable outputs (eg. 8″ interface REDWC signal)
    100% factory tested, and tested again by me before shipping

    Found via https://www.tuhs.org/pipermail/tuhs/2023-January/027510.html
    Thu Dec 14 15:24:14 2023 - permalink -
    - https://ultimatemister.com/product/greaseweazle-v4-usb-floppy-adapter-flux-reader-writer/
    computer hardware history TODO USB
  • Getting started with Google OpenSK
    OpenSK https://github.com/google/OpenSK released by Google is a fully open-source implementation for security keys written in Rust that supports both FIDO U2F and FIDO2 standards.

    OpenSK is based on the FIDO2 specifications, which combine the World Wide Web Consortium’s (W3C) Web Authentication (WebAuthn) specification and FIDO Alliance’s corresponding Client-to-Authenticator Protocol (CTAP).

    The nRF52840 MDK USB Dongle works well with OpenSK. Taking advantage of the UF2 Bootloader, you can easily program the OpenSK by just copying the .uf2-format image to the flash drive.
    Tue Nov 14 07:41:40 2023 - permalink -
    - https://blog.makerdiary.com/getting-started-with-google-opensk/
    computer cryptography hardware Rust security
  • Open source flash emulation
    Hardware to emulate the SPI memory in PCs to speed up the development of free BIOS firmware.
    Found on the Oberon mailing list.
    See also the articles about retrocomputing and security, e.g. https://trmm.net/Cosign/
    Fri Nov 3 16:34:01 2023 - permalink -
    - https://trmm.net/Spispy/
    BIOS computer electronics FOSS hardware history RSA SPI UEFI
  • C2-Scans mit readcd - Wozu?
    How to measure the number of correctable errors on CDs to judge the quality.
    Found via https://reproducible-builds.org/who/projects/ which links to https://www.fabiankeil.de/gehacktes/electrobsd/
    Thu Nov 2 12:59:33 2023 - permalink -
    - https://www.fabiankeil.de/readcd.html
    BSD CD coding computer FOSS german hardware Reed Solomon
  • Time Card mini adds Pi, GPS, and OCXO to your PC
    PTP time on a Raspberry Pi CM 4. Note that the Rpi 5 also has PTP support.
    See also https://www.jeffgeerling.com/blog/2022/ptp-and-ieee-1588-hardware-timestamping-on-raspberry-pi-cm4
    https://store.timebeat.app/collections/timecard-mini
    He mentioned another time-related HAT on his video https://m.youtube.com/watch?v=RvnG-ywF6_s

    https://www.jeffgeerling.com/blog/2023/build-your-own-private-wireguard-vpn-pivpn is interesting too.
    Sat Oct 14 12:34:18 2023 - permalink -
    - https://www.jeffgeerling.com/blog/2023/time-card-mini-adds-pi-gps-and-oxco-your-pc
    electronics hardware pi PTP raspberry software time TODO π
  • Helix antenna for L-band
    All parts 3D printed from PETG material, UV resistent and water proof. Found via https://www.rtl-sdr.com/techminds-building-a-3d-printed-2-4-ghz-dual-feed-helix-for-qo-100/ and https://www.qrz.com/db/DC8PAT
    See also https://www.rtl-sdr.com/receiving-x-band-images-from-the-arktika-m1-arctic-monitoring-satellite/, https://www.rtl-sdr.com/a-comprehensive-beginners-guide-to-hrpt-weather-satellite-reception/
    Sat Sep 23 13:45:51 2023 - permalink -
    - https://nolle.engineering/l-band-antenna/
    3D-print antenna electronics hardware helix
  • Holux.info – a free support project
    The websites of the manufacturer Holux are no longer accessible. Holux users will not find any information, downloads (drivers, software etc.) or support at holux.com.
    A former technician of Holux Germany and a former Holux specialist dealer are designing this free project. Holux users continue to receive detailed information about Holux GPS devices and support with questions or problems.
    Sun Sep 17 11:17:24 2023 - permalink -
    - https://holux.info/
    electronics hardware satellite-navigation
  • USB power button
    On/Off button with USB interface based on Arduino. Includes links to information about HID.
    Wed Jul 19 08:43:40 2023 - permalink -
    - https://ethertubes.com/usb-power-button/
    hardware keyboard software USB
  • lg library
    Can this function be used to run radioclk http://www.buzzard.me.uk/jonathan/radioclock.html from a GPI pin instead of DCD, DSR, CTS?
    Fri Jul 7 12:34:00 2023 - permalink -
    - http://abyz.me.uk/lg/lgpio.html#lgGpioSetAlertsFunc
    hardware Linux radio software time TODO
  • Open source friendly, repair- and upgradeable computers
    Tue Jul 4 21:01:07 2023 - permalink -
    - https://frame.work/at/en/about
    computer FOSS hardware
  • PiSugar2 - Portable Power Platform for Pi0
    With UPS and RTC features, PiSugar2 makes your rpi ready for fast prototyping and product development.
    Tue Jun 27 18:34:17 2023 - permalink -
    - https://www.pisugar.com/
    electronics hardware pi raspberry π
  • Sun Type 5 Keyboard on the PC
    Interface circuit to attach a Sun type 5 keyboard to a PC, using a 68HC11 microcontroller.
    Tue Jun 27 18:16:01 2023 - permalink -
    - http://www.buzzard.me.uk/jonathan/sunkbd.html
    electronics hardware keyboard Sun TODO
  • Simple Radio Clock for PC's
    Keep accurate time on a Linux machine based on radio time signals such as DCF77, MSF or WWVB. Found via https://packages.debian.org/stable/net/radioclk
    It uses the modem control input signals to monitor the signal from the radio receiver. For a Raspberry pi, where I want to use this, the articles
    "Raspberry Pi RTS / CTS Flow Control" https://ethertubes.com/raspberry-pi-rts-cts-flow-control/ and
    "Raspberry Pi 3 Hardware Flow Control"  http://www.deater.net/weave/vmwprod/hardware/pi-rts/ will be useful.
    Tue Jun 27 18:13:13 2023 - permalink -
    - http://www.buzzard.me.uk/jonathan/radioclock.html
    hardware Linux NTP pi raspberry software time TODO π
  • IdealLoop H301 - VLF Loop Receiver
    The best compromise between sensitivity and portability
    by Luca Feletti and Renato Romero. PCB layout by Jochen Richert.

    Detailed description of a shielded magnetic loop antenna for VLF signals
    Mon Jun 26 11:44:11 2023 - permalink -
    - http://www.vlf.it/feletti2/idealloop.html
    antenna electronics hardware radio
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