Ral

Working at the department of precise perfection.

I do stuff with computers, web, networks and technology in general.

I like making and building things: computer graphics, 3D modelling/printing, electronics and PCB design and so on.

I write software in different languages, recently mostly Rust. And I am a big proponent of functional programming paradigms.

I really enjoy mathematics, with a strong interest in computer algebra algorithms.

And I like playing Go.

Some shade of queer 🏳️‍🌈

2024-11-19

@schluessel @c3cat Thanks 😺

2024-11-19

A friend is printing colorful cat ears for the #38C3 congress. Some of them even with #enby :nonbinary_flag: and #trans :trans_flag: flag colors! 😺

How many could he expect to give away …?

@c3cat

Stacks with dozens of 3D printed cat ears. Meow :3
2024-11-14

@dena Coool :3

2024-11-09

@Neotheta @MeiLin Meh 😿
They look awesome!

Ral boosted:
2024-11-09

New round of Xenia stickers 🦊

A small batch of T-Shirts as well for the fastest. Order window open until 17.11. 2024. They will be shipped 18.11.

neotheta.fi/xenia/

Photo of a black t-shirt, it has a pentagram with Xenias head fitted in and says "N U X L I" in the outer summoning circle.Photos of sticker sheets. They all have Xenia on them. First one is called "Trans Xenia" featuring trans flag colours and very feminine Xenias, another sheet is "Linux Xenia" where she is more of a typical linux user with green highlight colours. Third sticker is "Summon Xenia", a pentagram to summon a helpful linux daemon to convert the laptop you stick it on.
2024-10-31

Der Swiss Python Summit hat nun einen eigenen Bahn Talk 😺

👉 media.ccc.de/v/sps24-56265-eve

Schon ganz interessant was die da gebaut haben.

#SPS24 #trains #Bahn #BahnBubble

2024-10-30

The MLT framework really does not use all available 32 cpu cores very efficiently. 😿

That despite me having enabled suitable parallelisation in Kdenlive.

Would be nice if Kdenlive could start multiple render scripts from its queue manager ...

Maybe I should just start up several instances? Or run the MLT scripts from the CLI?

#mlt #kdenlive

Screenshot of htop, showing many threads of MLT running but not using the 32 cores to their max capabilities.
2024-10-28

Video editing for the Swiss Python Summit.

Trimming the talk recordings and adding intro and outro slides.

All done with the awesome #kdenlive video editor.

#SPS24

Screenshot of the file browser showing tiles of all intro slides.Screenshot of the file browser showing tiles of all recorded video snippets.
Ral boosted:
2024-10-24

This week I finally finished a project I've been working on for the last few weeks: A map, laser-engraved into a ca. 60x70 cm piece of plywood, showing the @spaceapi opening states of hackerspaces in central Europe using red/green LEDs. All of that in a nice wooden frame, now on the wall at @CCCBasel.

Details on the project can be found in our Wiki (in German): wiki.ccc-basel.ch/index.php/Sp
or in the git repository (in English): git.kabelsalat.ch/s3lph/spacea

#spaceapi #spacemap #map

A map of a part of Europe (predominantely DE, CH, AT, CZ, NL, BE, LU) laser-engraved into plywood, mounted in a wooden frame. There is a total of 83 LEDs in the map, each labeled with the name of a hackerspace in that location. The LEDs glow either green or red, depending on whether the corresponding hackerspace is currently open or closed.A detail view of a map laser-engraved into plywood, showing the area of Switzerland, south-western Germany and northeastern France. In the map there are multiple circular LEDs, each in a small black socket, glowing either green or red. Next to each LED there is the name of a hackerspace engraved into the wood. The colors of the LEDs indicate whether the corresponding LED is currently open or closed.The map viewed from the back, showing the PCBs and cabling. There are 9 small PCBs mounted to the wooden frame of the map at different locations. The PCBs are connected to each other, and each PCB connects to up to 10 LEDs. The first PCB in the bottom right additionally holds an ESP32 microcontroller, to which a USB cable is connected.
Ral boosted:
2024-10-24

Grüße vom Swiss Python Summit 2024.

Dort sind @ral und Säschu und ich Winkekatzen-Crew (aka VOC).

Den Stream findet ihr auf streaming.media.ccc.de/swisspy (Danke @c3voc )

#SPS24

Stream Monitoring SPS24Video Camera and Display - SPS24other Video Camera - SPS24
2024-10-20

Lists are just unary trees!

-- List
data UnaryTree a = Nil | Cons (a, UnaryTree a)

-- Binary Tree
data BinaryTree a = Leaf | Branch (BinaryTree a, a, BinaryTree a)

#haskell
#functional_programming

2024-09-15

Played with the sheet metal workbench in #freecad for the first time. Made this pentagonal bowl (it is half of a dodecahedron) as a test.

The workbench has most of the basic technical features I'd expect. However, the UI is very clumsy and non-obvious, leading to a bad experience.

It's is clearly not yet on par with other, more polished workbenches of freecad, like part design or sketcher. (Which made a good deal of progress towards the 1.0 release!)

CAD 3D geometry for a pentagonal bowl-like object to be folded from sheet metal.Detail view showing the bottom and the corner reliefs.
2024-08-15

Playing "Manifold Garden"!

This is a stunning game by William Chyr.

Solving puzzles in an infinite three dimensional space with a toroidal topology. The world loops around in all directions. Additionally, one can choose and change which way gravity points ... this sets the stage for the puzzle mechanics ...

It is on the easier side with the puzzles. I'd sure enjoy a bit more difficulty there.

But the geometry and architecture of the buildings is gorgeous! 😻

manifold.garden/

#games

Screenshot of the Manifold Garden game.Screenshot of the Manifold Garden game.Screenshot of the Manifold Garden game.Screenshot of the Manifold Garden game.
2024-07-18

@Natanox @Neotheta Yes. There was a small shop. I think it was a temporary offer. Maybe there will be another round?

2024-07-18

@Neotheta Oh, and possibly the best part: there was a small drawing of Xenia on the back of the envelope! Drawn in glittery ink. She looks sooo cute! 😻

Line drawing of Xenia in the corner of the envelope.
2024-07-18

The stickers from @Neotheta I bought for some friends and myself have arrived! They are gorgeous! 😺
Big Thanks!

Sticker showing the head of the Xenia fox within a pentagram. With the letters "LINUX" spread around the edges.Sticker sheet with various drawings of the Xenia fox wearing trans-flag colored items.Another sticker sheet with the Xenia fox doing various Linux geekery.
2024-07-08

@Venty Hat an der #cosin2024 ganz nach Wunsch funktioniert 😺

2024-07-07

Modded a pair of catears to have two small bells attached inside the ears. 😺

Works better than expected. I used two different bell sizes to get varying sounds.

#c3cat

Photo of a pair of black 3D printed catears with two small metallic bells of different size, one attached to the inside of each ear.
2024-06-25

Releasing the #KiCad files for my #HDMI signal tap and proxy PCBs to the public.

The git repositories are on my #codeberg (Do clone with submodules!)

Tap:
codeberg.org/ral/hdmi_signal_t

Proxy:
codeberg.org/ral/hdmi_signal_p

A bunch of unassembled HDMI signal tap PCBs.A stack of three unassembled HDMI signal proxy PCBs.Two fully assembled HDMI signal taps, complete with plug/receptacle and pin headers.A single fully assembled HDMI signal proxy, complete with plug/receptacle and pin headers.
2024-06-05

#GPN22 ist, wenn eins mit mehr catears heim kommt, als bei der Abreise eingepackt waren. 😺

Diese diese wunderschönen catears, gedruckt aus zweifarbigem Filament, von einem Wesen geschenkt bekommen! 😻

Vielen lieben Dank nochmal.

Photo of (a pair of) catears, printed with a blue-purple two-color filament.Photo of (a pair of) catears, printed with a blue-purple two-color filament. Detail view showing the color mix in the print.Photo of (a pair of) catears, printed with a blue-purple two-color filament. High-res detail of a single ear, showing the special surface finish used to mix the two colors.

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