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Linux.org

Arduino Uno Q - LED Matrix - Plasma

In the previous article, we used the LED Matrix on the Arduino Uno Q to produce 'falling' dots that resemble rain. This is basic code in Python to create the 'rain' on the LED Matrix. Now, we are going to get a little more advanced. Back in the DOS days, there were programs that would act more like screensavers, and some were very interesting to watch. Specifically, the one named 'Plasma' or sometimes 'Ooze'. The basis is the use of 256 colors, which cycle through the colors and start over... https://www.linux.org/threads/arduino-uno-q-led-matrix-plasma.72403/

LWN.net

RustConf recordings

The Rust Foundation has posted the recordings from RustConf 2026 in Montreal, Canada. Photos of the event are also available. LWN covered four talks from RustConf this year.

LWN.net

[$] An update on the Sashiko patch-review system

Patch review has long been one of the limiting constraints for the kernel project (and most others); there just aren't enough people to properly review all of the code that is submitted for inclusion. The Sashiko system, which uses a large language model (LLM) to generate reviews automatically, offers the prospect of some relief, and has already become an important part of the kernel's development process. At the 2026 edition of Kernel Recipes, Roman Gushchin, the maintainer of Sashiko, provided an overview of how the system works and what is being done to improve it.

LWN.net

Picard 3.0 released

Version 3.0 of the MusicBrainz Picard tag editor has been released. "This release brings many changes, including an upgrade to Qt6, a completely new plugin system, several improvements to the user interface, cover art processing, [International Standard Recording Code (ISRC)] submission and many more." LWN covered Picard in April.

LWN.net

Security updates for Monday

Security updates have been issued by AlmaLinux (ghostscript, libvirt, and osbuild-composer), Debian (freecad, linux-6.12, node-lodash, pcre2, perl, php8.2, ruby-rack-session, wireshark, and xen), Fedora (assimp, budgie-control-center, budgie-desktop, budgie-desktop-services, budgie-desktop-view, chromium, cri-o1.36, curl, flatpak, lemonldap-ng, libX11, nagios-plugins, nanosvg, noctalia, openssl, pgbouncer, pocillo-gtk-theme, prometheus, python-streamlink, python-urllib3, python-uv-build, python3.12, ruff, rust-libcst, rust-libcst_derive, rust-salsa, rust-salsa-macro-rules, rust-salsa-macros, ty, and uv), Red Hat (rhc-worker-script), SUSE (amazon-ecs-init, binaryen-133, bind, chromium, distribution, firefox, firefox-esr, glib2, gnumeric, helm, jline3, kubevirt-1.6, libparted-fs-resize0, libslirp-devel, libtcnative-1-0, libtcnative-2-0, tomcat, tomcat10, tomcat11, libwireshark19, openai-codex, python313-litellm, rpcbind, rustup, sccache, suseconnect-ng, valkey, wget, and xdg-dbus-proxy),