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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

Reply to
@robpike @io There even was a barber shop downstairs.
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jmorris

James Morris

Found something very useful -- a site with a collection of creative commons #science & #math texts. Some quite old but still excellent.

http://www.vias.org/

Some good coverage of #valve #electronics (it's not easy to learn about these days), and the #radio #antenna book has some very useful info: http://www.vias.org/radioanteng/
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jmorris

James Morris

Pro-tip: assume every Micro-B USB cable is a power-only cable until proven otherwise. I was sure I bricked my Airspy R2 SDR receiver, swapping in multiple different cables, different laptops, operating systems etc. Turns out every cable I picked up was for power only, even though I "knew" they were all data cables.

tl;dr: #USB

#airspy #hamradio #amateuradio #rf #sdr #radio
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jmorris

James Morris

Interesting #fosdem lightning talk - https://fosdem.org/2023/schedule/event/gitlab_forge_for_teachers_and_students_in_france/

A gitlab forge for all teachers & students in France, supported by the Govt. I can't imagine what it would take to see something like this in Australia.
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jmorris

James Morris

Railgun Lab auction for anyone near wherever this is in Va: https://www.proxibid.com/Linkous-Auctioneers/ELECTROMAGNETIC-RAIL-GUN-SYSTEM-and-LAB-EQUIPMENT/event-catalog/236367?lr=1675929422949
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jmorris

James Morris

Reply to
@jperrin Pretty sure I know why
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jmorris

James Morris

Getting #fosdem FOMO, need to get there one of these years.
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jmorris

James Morris

Reply to
@edward Is this all #fosdem people?
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jmorris

James Morris

Reply to
@brauner it's the worst of all worlds
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jmorris

James Morris

Clippy lives on 🤷🏼‍♂️
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jmorris

James Morris

Reply to
@b0rk @pixouls sorry this is happening. I greatly appreciate your work.
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jmorris

James Morris

Reply to
@bdowney @djm wow, that is crazy. SF is lost.
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jmorris

James Morris

Reply to
@mos_8502 I started programming seriously in editors like this, so many feelings. There's also "joe", which I used for kernel programming for a couple of decades.
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jmorris

James Morris

Reply to
@robpike @rsalz @zekjur where is it exactly?
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jmorris

James Morris

This is the Xgecu T48 universal programmer, arrived with a Lunar New Year gift. The T48 supports over 32000 chips, including a bunch that of older MCUs such as the PIC16C*

#electronics
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jmorris
repeated
LinuxSecSummit

Linux Security Summit 🐧

📣 The CfP for the 2023 Linux Security Summit North America is now open! 📣

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

LSS-NA 2023 will be held in Vancouver, BC, Canada from May 10-12.

CfP submissions are open until March 1st!

#linux #linuxsecuritysummit #linuxfoundation #security #infosec
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jmorris

James Morris

Friday night fun -- learned how to use BitMagic & Tigard devices with PulseView software to make a logic analyzer. It works!
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jmorris

James Morris

Reply to
@dwizzzle hrm, good idea
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jmorris

James Morris

Reply to
@mekkaokereke I'm really enjoying the lack of "hot takes" and dunks. here. When I look back at Twitter, it's people sweating out one-liners.
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jmorris

James Morris

Can we embed videos here? Here's some nice #winlink activity, getting 3230 bps on 30m, over a distance of 400km. The 2750 Hz bandwidth is nice if your rig supports it!

https://www.youtube.com/watch?v=dJvC81YkmAs

#hamradio #amateurradio #hf #vara
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