Posts
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Following
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Followers
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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
jmorris
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radiotelescoop@mastodon.nl

Dwingeloo Radiotelescoop

A few weeks ago, Michelle @abraxas3d visited us. She wrote a very nice report on "A day at Dwingeloo", detailing some of our recent experiments. The full story is at https://www.openresearch.institute/2025/11/12/a-day-at-dwingeloo/

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jmorris

James Morris

Idle thought: I’ve been working as an IC for a few months again after many years of management. I fundamentally enjoy the development work and open space on my calendar. Digging deeply into some new technical area and solving a difficult problem with few distractions is very much my thing and does not feel like work at all. But with this also is the realization that I can accomplish at least 10x of that by helping a team to solve some larger scale problem—moving the needle in a meaningful way, which also means delivering that to people.
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jmorris

James Morris

British Airways AI. Glad they’re not trying to do anything difficult or life-critical with technology.
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jmorris
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pid_eins@mastodon.social

Lennart Poettering

1️⃣5️⃣ Here's the 15th post highlighting key new features of the recently released v259 release of systemd.

Here's a quick one: you might have noticed that whenever a systemd service deactivates we'll log a brief journal message saying the amount of CPU time consumed, and the peak memory used by this unit cycle. With v259 that message is slightly extended: it will now also indicate the wall clock time passed since activation of the unit. This is particularly nice when…

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jmorris
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calyxinstitute@mastodon.social

The Calyx Institute

RE: https://mastodon.social/@flypig/115731062513471615

If you are going to in 2026, stop by the FOSS on Mobile devroom!

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jmorris

James Morris

Regularly asking yourself "What if everything I know is wrong?" is important.

https://youtube.com/shorts/EMV0VXpvPgo?si=fcOg6mfNWn-0kvUX
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jmorris

James Morris

@mpi_grav great opportunity to work & study in a fundamental and concrete field.

RE: https://academiccloud.social/@mpi_grav/115724935735282096
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jmorris
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brauner@mastodon.social

Christian Brauner 🦊🐺

The website for 2026 is up:
https://events.linuxfoundation.org/lsfmmbpf

LSFMM 2026 will take place in Zagreb, Croatia May 4 to May 6.

I have the privilege of acting as chair for this year and I'm very excited for one of the best conferences out there.

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jmorris

James Morris

I presented an overview of the Ultraviolet project at @linuxplumbersconf today. This is a proposed architecture and reference implementation for generalised code integrity in Linux. The goal of the presentation was to seek early feedback from the community and to invite collaboration. The slides are here: 🖥️ https://lpc.events/event/19/contributions/2222/
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jmorris

James Morris

Edited 24 days ago
Meteor scatter is fun & addictive. Should be a good opportunity for folk (in the US and EU, at least) to try receiving over December 11/12.

Receiving is actually pretty easy on 6m. You can do it with a simple dipole, an RTL-SDR, and WSJT-X. Better with a gain antenna like a Moxon. Use the pskreporter site to see where other stations are active on 6m msk144, aim roughly at the "radiant" midpoint and leave running overnight.

If you've decoded AIS, ADS-B, APRS etc., you can easily do this.



📡 See: https://www.hamsci.org/msqp
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jmorris

James Morris

@stgraber nice!

RE: https://hachyderm.io/@stgraber/115645419902489080
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jmorris

James Morris

A couple of shell aliases I use all the time:

alias gg="git grep"
alias gt="glow -t"

The last is for viewing .md files.
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jmorris

James Morris

FYI. This is/was a strong password & supposedly protected.
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jmorris

James Morris

Kind of weird to think that Voyager 1 is 25 billion km away, transmits with about 22 watts of RF power, and we can still hear & decode it here it on Earth.
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jmorris

James Morris

Video of reflow soldering with an MHP50 hotplate. Works pretty well for small boards. I was previously using a hot air gun but it would blow the components around. Can also more accurately follow the manufacturer reflow specs.

https://www.youtube.com/watch?v=rdS6JTRX_HA
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jmorris

James Morris

@strangeparts not sure I would enter such a room.

RE: https://mastodon.strangeparts.com/@strangeparts/115515407911086704
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jmorris

James Morris

I can highly recommend getting a ferrule crimper for connecting wires to these kinds of terminals.
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jmorris
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david_chisnall@infosec.exchange

David Chisnall (*Now with 50% more sarcasm!*)

We have released 1.0 of the #CHERIoT specification! The architecture has been unchanged for almost a year and has been implemented in two open-source cores. We (SCI) are getting back our first CHERIoT silicon from the fab soon and will be moving to mass production net year (I can't talk about what other people are doing with CHERIoT).

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jmorris

James Morris

@mossmann very cool: measuring < 0.01 Hz changes in an 60 kHz signal from Colorado while flying in a passenger jet is impressive.

RE: https://mastodon.social/@mossmann/115493045854686572
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jmorris

James Morris

AI really is no fun.
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