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

An implementation of ANSI Common Lisp written in C.
If I find the time, I would like to find answers which allow to add information to the table on https://www.cliki.net/Common%20Lisp%20implementation

Found via https://ochicken.net/projects/workspace/
https://andreyor.st/posts/2022-02-22-new-look/ could be useful for my own blog, if I ever start it.

Found in c't 2023-10 (TBC).
See also https://passkey.org/ which was mentioned in the same article.

Description of many different knots. Found via Paul Lutus' page https://arachnoid.com/rope_climbing_101/index.html

Description of Org’s new native citation syntax.
Found on https://github.com/vikasrawal/orgpaper/blob/master/orgpapers.org which mentions that org-mode newer than 9.5 is needed for this feature.

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/

By providing a standard way to describe data recordings, SigMF facilitates the sharing of data, prevents the "bitrot" of datasets wherein details of the capture are lost over time, and makes it possible for different tools to operate on the same dataset, thus enabling data portability between tools and workflows.

Implementations of the the standard are available for Python, C++ and GNU Radio.

Found on https://www.n2yo.com/satellite-article/How-many-satellites-can-we-safely-fit-in-Earth-orbit/86
https://planet4589.org/jcm/misc/distros/index.html observations about Linux desktops

Controlling NeoPixel LEDs with a Raspberry pi Pico and Circuit Python.