Now using aluminum extrusions to adjust the position of the sensor & also hold it tight. Any further improvement will require a dial indicator to ensure it’s centered. And maybe some shims. Learning a lot about precision metalwork with this.

Making some hopefully final mods to the azimuth sensor for this az/el drive. Spent ages trying to find screws to match the Hammond enclosure. Turns out to be M3.5, which I have never seen used before. #hamradio #amateurradio #microwave #radioastrnomy

TIL my 50 MHz scope is still somewhat usable up to 150 MHz.

A new release of SETools is available:

https://github.com/SELinuxProject/setools/releases/tag/4.4.4

Changes:

* Update for compiling with libsepol 3.6.
* Update apol to use fully specified PyQt enums.
* Correct minor code lint issues.

Another reminder that you only have ONE week left to submit to the containers or kernel devrooms at FOSDEM 2024!
https://stgraber.org/2023/11/26/containers-and-kernel-devrooms-at-fosdem-2024/

A 2023 #scientist #linocut for #ArtAdventCalendar of #astronomer Vera Rubin (neé Cooper, ‘28-‘16) & her discovery that angular motion of galaxies deviates from predictions, 1st evidence for dark matter, now known as 5x as common as matter & the stuff which dictates dynamics of galaxies & evolution of our universe! The Nobel committee waited 3 years after she died to reward another for the theory of dark matter.

She found 6 months mat leave post MSc very difficult 🧵1/n

#printmaking #sciart

2 hours later…

#EmacsConf was tons of fun! :) The prerecorded videos are up at https://emacsconf.org/2023/talks and I'll work on extracting the live talks and Q&A this month.

It ain’t much, but it’s honest work. Az/El sensors serial (SSI) to Arduino board. Removed an RS485 layer.
@adafruit 1/4 size proto boards are cute.

@penguin42 kernel programming was no more difficult

@penguin42 actually Xt, not wt.

@penguin42 Yep, that may have been a commercial library for Linux, before an open source equivalent existed. Prior to that I was using Xwt and even raw X. The later releases of various open source GUI libraries and desktops was such an major breakthrough at the time.

From the same era, when writing a GUI app in Linux probably meant buying a shelf full of X programming books. I was really, really, into satellites.

Mockup and progress... 🙈 (using DJGPP + dosbox)

Note, however... this toot is not a commitment to completing anything 😛 I can already tell that I'm going to have trouble with some of the math here (and maybe performance).

Just tripped across this blast from the past: my first published article, in an .au electronics magazine.

Remember paper magazines? No? Ok.



#hamradio #amateurradio #satellite #electronics

@keithp Thanks for writing a man page! Also, Nickle looks very interesting.

Hey #Linux #Kernel people. Last year we had the first #Kernel Devroom at #FOSDEM. And we're running the #Kernel Devroom for #FOSDEM in 2024 as well!

#FOSDEM 2024 is taking place over the weekend of the 3 & 4 February in Brussels, Belgium!

It is a wonderful event that's very close to my and a lot of people's hearts!

Join @rppt, Daniel Borkmann, and @stgraber, and myself and make this another great #FOSDEM!

We're very excited for your submissions!

https://lists.fosdem.org/pipermail/fosdem/2023q4/003536.html

@film_girl I made a day trip (via plane) to Portland many years ago, to see an art thing, and people looked at me like I was insane. This proves I am normal, thanks.

@W6KME @ai6yr and "always check 20m"

@danluu almost unusable in many cases, reminds me of Altavista days.