Posts
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Following
449
Followers
349
Linux Kernel security developer, working for Microsoft. Also W7TXT. Views are my own.
Topics: #Linux #kernel #security, #amateurradio, #RF, #hamradio, #electronics, #science, #radioastronomy, #physics, #space, #arduino.

📡 https://w7txt.net/
🐧 https://blog.namei.org/
☠️ https://www.facebook.com/w7txt
jmorris

James Morris

Reply to @azonenberg@ioc.exchange
@azonenberg love seeing the purple PCBs.
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jmorris

James Morris

@LWN they grow up so fast

RE: https://fosstodon.org/users/LWN/statuses/111581306340618478
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jmorris
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gregkh

Greg K-H

Reply to @warthog9@social.afront.org
Edited 1 year ago
@warthog9 Many thanks to you and
@monsieuricon 's work here and your continued work to keep vger alive all these years, it's one of the primary reasons that Linux development works so well.
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jmorris

James Morris

Reply to @bluca@fosstodon.org
@bluca rail travel? you are living in the future.
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jmorris

James Morris

Reply to @MLE_online@social.afront.org
@MLE_online @misternineham relatable.
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jmorris

James Morris

Reply to @va3db@mastodon.radio
@va3db at what frequency?
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jmorris

James Morris

Edited 1 year ago
Just a warning for people thinking about getting into #microwave #amateurradio -- it's an infinite labyrinth of hobbies, knowledge, and equipment. Precision machining, stripline circuits, strange semiconductors (IMPATT diode amplifier, anyone?), exotic electron tubes (which will try and kill you via xrays, lethal voltages, and beryllium oxide), metrology, physics, DIY, vintage equipment resurrection, morse code (modulation? sheer luxury!), scouring ebay, haunting electronics stores, poring over poorly scanned service manuals from defunct companies, and too many hex keys.

Oh, and it's a gateway drug to #radioastronomy.

#hamradio
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jmorris

James Morris

Edited 1 year ago
@evacide Yikes. How much information did Verizon actually need to collect or keep?

RE: https://hachyderm.io/users/evacide/statuses/111608814425154905
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jmorris

James Morris

Reply to @jmorris
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.
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jmorris

James Morris

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
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jmorris

James Morris

TIL my 50 MHz scope is still somewhat usable up to 150 MHz.
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pebenito@infosec.exchange

Chris PeBenito

Edited 1 year ago

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.

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jmorris
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stgraber@hachyderm.io

Stéphane Graber

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/

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jmorris
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minouette@spore.social

Ele Willoughby, PhD

A 2023 for of 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

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jmorris

James Morris

Reply to @jmorris
2 hours later…
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jmorris
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sachac@emacs.ch

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.

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jmorris

James Morris

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.
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jmorris

James Morris

Reply to @penguin42@mastodon.org.uk
@penguin42 kernel programming was no more difficult
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jmorris

James Morris

Reply to @jmorris
@penguin42 actually Xt, not wt.
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jmorris

James Morris

Reply to @penguin42@mastodon.org.uk
@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.
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