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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

Definitely living in the future here -- using AI to write code for a quantum computer.
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jmorris

James Morris

The local electronics store (Vetco) is an Aladdin's cave of test equipment at the moment.
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jmorris

James Morris

Edited 1 year ago
Overnight meteor scatter rx haul on 6m, longest distance so far.

#hamradio #vhf #msk144 #6m #meteorscatter #perseid #meteors #space #amateurradio #wsjt-x
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jmorris

James Morris

Finally completed the initial version of 'fp_util', which allows you to control & monitor an Eltek Flatpack2 power supply, using an Arduino with a CAN bus shield.

https://github.com/xjamesmorris/fp_util

These PSUs are intended for telecoms racks, as chargers for 48v batteries, and supply 2kW or 3kW. Surplus units are useful for LDMOS RF amplifiers, and EV / e-bike etc. battery charging.
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jmorris

James Morris

Load testing my 50v power supply project, using a cheap hot water heater element in water (briefly, < 1 min). Dissipates about 350W. I’m thinking about mounting it into an empty paint can which can hold several gallons. Anyone know if mineral oil would be better than water for this?
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jmorris

James Morris

@stgraber Great to see! Did @LWN or anyone in the media pick up on what happened at Canonical?

RE: https://hachyderm.io/users/stgraber/statuses/110848690829500671
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jmorris
repeated
LinuxSecSummit

Linux Security Summit 🐧

Edited 1 year ago
📢 🐧 The Linux Security Summit Europe (LSS-EU) 2023 schedule is published!

See: https://events.linuxfoundation.org/linux-security-summit-europe/program/schedule/

This will be held September 20-21 in Bilbao, Spain, and is co-located with the Open Source Summit (https://events.linuxfoundation.org/open-source-summit-europe/)

Register here:
https://events.linuxfoundation.org/linux-security-summit-europe/register/
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jmorris

James Morris

@brauner This is crazy and wrong.

RE: https://mastodon.social/users/brauner/statuses/110781239093096206
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jmorris

James Morris

Wrong answers only: what does this kernel code do?

struct file *file = (struct file *)(v & ~3);
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jmorris

James Morris

Anyone else NOT planning to go see Oppenheimer? The more hype a movie has, the less I feel like watching it, especially anything science-y.

For those who’ve seen it already: is it worth seeing in the cinema?
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jmorris

James Morris

Sol, bruh.

#hamradio #amateurradio #space #spaceweather #solar #ionosphere #hf #rf
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jmorris

James Morris

AI/ML question: why hasn't spam email been solved yet?
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jmorris

James Morris

@adafruit I didn't know I needed one of these, but it seems I do now.

RE: https://mastodon.cloud/users/adafruit/statuses/110701234650656162
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jmorris

James Morris

Catching up on the recent SSITC security conf in France -- some is in English.

https://www.sstic.org/2023/programme/

#infosec #security #linux #opensource
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jmorris

James Morris

@MLE_online Nice write up!

RE: https://social.afront.org/users/MLE_online/statuses/110588697419651033
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jmorris

James Morris

Excited to get this (~3rd in reading queue). Mersini-Houghton’s multiverse theory is the only one which has been tested, AFAIK.
I find it difficult to understand (e.g pre-Universe “energy landscape”) so I’m hoping the book will help.
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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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