Posts
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Following
466
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

James Morris

@adafruit IoT Lava Lamp

RE: https://mastodon.cloud/users/adafruit/statuses/110543749983909589
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jmorris

James Morris

@SDF What is Lemmy?

RE: https://mastodon.sdf.org/users/SDF/statuses/110503767294757551
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jmorris

James Morris

I'm also now on Bluesky at @jamesmorris.bsky.social

but this will remain my primary nerd social for now.
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jmorris

James Morris

I do NOT need another #radio. Definitely not a classic pristine valve #shortwave receiver. It's exactly what I don't need.

https://www.ebay.com/itm/115813046377
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jmorris

James Morris

#arduino pro tip: use LibPrintf if you want easy formatted string printing to serial.
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jmorris

James Morris

Trying out the AI image generation in Powerpoint.
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jmorris

James Morris

Hell is other people’s coding style.
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jmorris

James Morris

Any hints on how to correctly integrate appimage files on #Fedora 37?
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jmorris

James Morris

My ideal house. #goals #hamradio #amateurradio #microwave
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jmorris
repeated
LinuxSecSummit

Linux Security Summit 🐧

📌 A reminder! CfP for LSS-EU closes June 5th.

RE: https://social.kernel.org/objects/e72fbf67-74c7-4945-a9c6-5ea76dd25c99
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jmorris

James Morris

Just looking at some code of mine from 1994, for satellite tracking, and found this optimistic gem.
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jmorris

James Morris

TIL: Dickie George, who spoke at the 2007 #SELinux Symposium, and who was added to the NSA HoH in 2022, is the guy who created differential cryptanalysis while reviewing the DES code from IBM! This is why the then-mysterious S boxes were added. https://www.nsa.gov/Press-Room/Digital-Media-Center/Biographies/Biography-View-Page/Article/3330261/richard-dickie-george/
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jmorris

James Morris

This is really something. #antipattern
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jmorris
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LinuxSecSummit

Linux Security Summit 🐧

Kicking off the 2023 #linuxsecuritysummit in Vancouver, BC.

https://events.linuxfoundation.org/linux-security-summit-north-america/program/schedule/

#linux #kernel #infosec #security @linuxfoundation
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LinuxSecSummit

Linux Security Summit 🐧

Reminder: LSS-NA is happening this week, starting Wednesday! Virtual attendance is available for those not able to make it to Vancouver.

RE: https://social.kernel.org/objects/b29af78c-329b-4bbb-9d99-81299bd1b6e7
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jmorris

James Morris

@kernellogger very nice!

RE: https://fosstodon.org/users/kernellogger/statuses/110282350145400526
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jmorris

James Morris

@jayulfelder Anti-trans speech is a form of violence, in my view.

RE: https://mastodon.online/users/jayulfelder/statuses/110265185818357788
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jmorris

James Morris

Slow but sure progress on my 1kW HF/VHF amplifier power supply. Bought a PCB for the Eltek module and decided to solder the output wires (10 AWG THHN) rather than use the more common XT-60 connectors. After some research, I found out that XT-60s, commonly used for drones & RC batteries, are only rated at 30A continuous. The 60A figure is for peak current, and the available specs are very light on details generally. This PSU is being built for 40A continuous (at 50v), so the XT-60 is not sufficient. Next up will be to connect this Sparkfun CAN shield to configure & monitor the Eltek.
#hamradio #amateurradio #electronics
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jmorris

James Morris

@LinuxSecSummit ICYMI

RE: https://social.kernel.org/objects/e72fbf67-74c7-4945-a9c6-5ea76dd25c99
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jmorris

James Morris

Next project: assemble these components from W6PQL into an MF/HF/6m amplifier. It’s specified for 1kW but I suspect it can do more. #amateurradio #hamradio
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