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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


Pioneering computer scientist, electrical engineer, and transgender activist Lynn Ann Conway has died at the age of 86. Every modern silicon chip incorporates her ideas, and her courage was an inspiration to many. https://en.wikipedia.org/wiki/Lynn_Conway Long may she run...

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Zip disks, anyone else remember these existed? Anyone?
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Linux Security Summit 🐧

🐧 The 2024 Linux Security Summit EU schedule is published: https://events.linuxfoundation.org/linux-security-summit-europe/program/schedule/

🐧 Event: 16-17 September. Vienna, Austria.

🐧 Register: https://events.linuxfoundation.org/linux-security-summit-europe/register/
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Would you trust an $8.99 7-port USB hub ? Asking for a fiend…
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I think I have teased this already, so here it is:
Proudly presenting “ligra”, an open source projector/projection (LiGra – Light Graffiti) platform, allowing you to broadcast your messages, your logos, your artwork, whatever you need others to hear, to whoever sees it! :3

With ligra I wanted to explore image-projection and especially projections on the cheap, so I went to my local flea market and built a platform around old camera lenses. You can find two of them in the wild at

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A nice evening of trying to get the best out of our SEM!

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I hope this toot finds you well
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Incredible project, an open source MRI machine. Build video / workshop: https://www.youtube.com/watch?v=1q0dXg17E_w
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Should I install this software?
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Join us for the last session of the party with @UniversalBlue and closing remarks!

Watch it live: https://www.youtube.com/watch?v=DRoy2TZC5V4

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@maehem that font brings back memories.

RE: https://mastodon.social/@maehem/112497725751975147
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A gentleman named Paul Khoury approached me about getting a retro computer he'd acquired up and running. The computer is a Sun SPARCstation UPN (1997), a prototype for a super small desktop computer that preceded the Mac mini by about 6-7 years. Only about 20 were ever made. I was the designer on the project and had poured my soul into it, so I was proud to help him get it running. I dug out the schematics from storage and gave any advice I could remember and he got it powered on in a few days.

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Very excited to have a paper published in DUBUS. I’ve been reading this journal for about a decade and never imagined when I started that I’d be published there. The journal is also translated into German (or English) by the editors, as it’s a dual language publication.

#hamradio #amateurradio #microwave
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1️⃣5️⃣ Here's the 15th installment of posts highlighting key new features of the upcoming v256 release of systemd.

systemd integrates with many components of the OS. Due to this it links against various external libraries. Generic distributions – which typically enable all features a package provides – usually have to deal with relatively large dependency trees in cases like this.

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It feels like cheating to use these pre-cut wire links for soldering (vs. push-in breadboard), but I’m over making these by hand. #amateurradio #hamradio #electronics
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Prototyping a monitor circuit for GaN RF power amplifier devices. This is indicating drain current and heat sink temperature, and can be expanded to other measurements as needed. What started as a ‘simple’ project became an entire side quest. This uses an Arduino Pro Mini, an INA169 current sensor, and a thermistor. Could be done more simply with a PIC but this is what I had. The cheap OLED display self destructed not long after this photo, as I fed it 12v instead of Vcc.
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MPI for Gravitational Physics

📣 Postdoc job alert 📣

The “Astrophysical and Cosmological Relativity” department at the @mpi_grav in Potsdam announces the opening of several postdoctoral appointments.

These appointments will be in the area of data analysis and its interface with waveform modeling for the recently adopted space-based gravitational-wave detector LISA.

ℹ️ https://www.aei.mpg.de/1155448/acr-lisa-postdoc

📅 apply by May 21, 2024

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[$] Systemd heads for a big round-number release https://lwn.net/Articles/971866/

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Uh, why does dropbox "need" access to my contacts?
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