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  • https://hack.org/mc/colophon.html
    Found via the COFF mailing list https://www.tuhs.org/pipermail/coff/2023-August/001663.html
    See https://hack.org/mc/blog/nts2.html about NTS, a secure version of the network time protocol
    https://hack.org/mc/blog/no-more-x11.html about Wayland
    https://hack.org/mc/writings/xkb.html about keyboard mapping
    Sat Aug 5 20:19:07 2023 - permalink -
    - https://hack.org/mc/colophon.html
    blog key-binding NTP org-mode time X11
  • ClipboardsWiki
    Suggestions for handling CLIPBOARD, PRIMARY selection in X11.
    Wed Jul 26 16:20:02 2023 - permalink -
    - https://www.freedesktop.org/wiki/Specifications/ClipboardsWiki/
    reading X11
  • PiccoloSDR: A Simple SDR From a Raspberry Pi Pico
    A simple direct sampling software defined radio, with a bandwidth of 250 kHz using the Raspberry Pi Pico.
    Thu Jul 20 16:59:53 2023 - permalink -
    - https://www.rtl-sdr.com/piccolosdr-a-simple-sdr-from-a-raspberry-pi-pico/comment-page-1/#comment-240725
    pi radio raspberry software π
  • The HDF Group - ensuring long-term access and usability of HDF data and supporting users of HDF technologies
    Non-profit group working on the hierarchical data format, version 5 (HDF5). Note that https://cyrille.rossant.net/moving-away-hdf5/ discusses some disadvantages of HFD5.
    Wed Jul 19 17:21:19 2023 - permalink -
    - https://www.hdfgroup.org/
    science software
  • Back to Basics: Breaking Down the Fundamentals of Filters
    ebook explaining RF filters.
    Wed Jul 19 15:15:46 2023 - permalink -
    - https://blog.knowlescapacitors.com/blog/back-to-basics-breaking-down-the-fundamentals-of-filters
    electronics reading TODO
  • GitHub - simonthum/git-sync: Safe and simple one-script git synchronization
    This script intends to sync near-automatically via git in "tracking" repositories where a nice history is not as crucial as having one.
    Found via a link on https://orgmode.org/worg/
    Wed Jul 19 14:31:29 2023 - permalink -
    - https://github.com/simonthum/git-sync
    git TODO tool version-control
  • 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
  • Mathematical Problem Solving
    Mon Jul 17 11:38:04 2023 - permalink -
    - https://people.kth.se/~shapiro/index.html
    for:mp mathematics reading
  • Fortran 77 Flowcharting Utility
    Generates flow charts from Fortran 77 programs with the help of AT&T's graphviz.
    Tue Jul 11 22:35:33 2023 - permalink -
    - http://www.deater.net/weave/vmwprod/f77_diagram/
    Fortran tool
  • 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
  • Reception of time and frequency reference signals in Lviv, Ukraine.
    Experiments tracking DCF77 and MSF, using amplitude, phase and correlation to measure time with respect to GPS.
    Mon Jun 26 11:27:48 2023 - permalink -
    - http://www.vlf.it/storozh/DCF77_Lviv.htm
    physics radio satellite-navigation time
  • Reception techniques: An easy loop
    Shielded loop antenna for VLF, found on http://www.n4iqt.com/easy_loop_antenna/Notes.txt
    Fri Jun 23 18:33:28 2023 - permalink -
    - http://www.vlf.it/easyloop/_easyloop.htm
    antenna electronics hardware radio
  • tinydevices.org | TinyPFA / tinyPFA home page
    The tinyPFA is a Phase Frequency Analyzer, it is a portable, battery operated, two input device with a 4 inch display that can measure very precise frequency and phase differences between the signals applied to both inputs. The input frequency can be any frequency between 1 MHz and 300 MHz. Typical use is to measure the differences between two 10 MHz clocks. The tinyPFA can numerically display the phase and frequency difference, show the measurement in a graph versus time, store the measurements on a SD card inserted into an SD card slot, or send the phase measurements over USB to a PC, running a program such as TimeLab, for further display and processing. Phase and Frequency measurement accuracy is better then 1e-12 divided by the measurement time in seconds with decimation set to 1 Be aware the maximum frequency difference that can be display depends on the measurement time (Tau) and is approximately 0.4 / (Tau in s) so for Tau is 1 s it is 0.4 Hz maximum difference.
    Fri Jun 23 18:30:41 2023 - permalink -
    - https://www.tinydevices.org/wiki/pmwiki.php?n=TinyPFA.Homepage
    electronics hardware time
  • A Small Dual Mixer Time Difference (DMTD) Clock Measuring System
    Found on https://tinydevices.org/forum/viewtopic.php?t=52
    Fri Jun 23 18:09:25 2023 - permalink -
    - http://n4iqt.com/BillRiley/
    electronics hardware time
  • PAX Manual - documentation tool for Common Lisp programs
    "What if documentation really lived in the code?

    Docstrings are already there. If some narrative glued them together, we'd be able develop and explore the code along with the documentation due to their physical proximity.

    With the simplistic tools provided, one may emphasize the narrative as with Literate Programming, but documentation is generated from code, not vice versa, and there is no support for chunking.

    Code is first, code must look pretty, documentation is code."
    Tue Jun 20 11:39:17 2023 - permalink -
    - https://melisgl.github.io/mgl-pax-world/pax-manual.html#MGL-PAX:@INTRODUCTION%20MGL-PAX:SECTION
    common-lisp TODO tool
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