All Posts

At Zugvögel Festival 2026, our floor became a church - and what is a church without a confessional? So I built one: a wooden confessional box where festival visitors confess their sins to an AI priest, who teases the juicy details out of them, grants absolution, and then sends them onwards to the Holy Toilet - where their sins, anonymized and retold in an angel’s voice, are played back to whoever is enthroned there at the moment. [Read More]

This year, our Walden floor at Zugvögel became Santo Nido: a church dedicated to a phoenix sect. Stained-glass windows, holy birds, an AI confessional, and a tower-clock that goes wild with the music. A lot of religious nonsense, and so much love for detail. [Read More]

Code to create a WLED LED-Map (the JSON that tells WLED the positions of the LEDs) with some features that I didn’t find in any online editors: Dragging the mouse over the canvas fills all hovered cells, rescaling the map to a different size, inverting, and inserting LEDs in between existing ones. [Read More]

This year, our Walden Floor transformed into the PetroLoco gas station that has been the site of a battle between the oil oligarchs and the ecological fraction. Next to the floor and the usual interactive installations, you could also play real-life Tuxkart here. [Read More]

An interactive, networked spaceship you can actually board: players complete (or sabotage) missions across a dozen physical interfaces - buttons, joysticks, LED boards, sensors, etc - to either launch the ship or doom it, with everything driven by a Python/ESP/Unity stack. It’s modular, auto-resets regularly, and scales to festival crowds without manual babysitting. [Read More]

First, there was the infamous PoolnudelschlagapparatPool Noodle Hitting Apparatus (PNHA). At Fusion Festival 2023, we had some pool noodles, some windshield wiper motors, and a wood construct to put a simple game into, so we did the only sensible thing to combine those things: You play Flappy Bird, and if you are too bad, you get hit with a pool noodle.

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A universal relay box for interactive builds: Ethernet-controlled with an integrated PSU, switching 230V, 12V, 5V and dry relays via MQTT, OSC or Art-Net. I use it across projects like my Supertuxkart and the Palapa Spaceship to drive lights, fog, motors, and effects with simple, robust control. [Read More]

In this (german-language) episode of Code for Thought, Carina Haupt (DLR) and I talk with host Peter Schmid about large language models in Research Software Engineering: where tools like Copilot genuinely help (routine tasks, tests, small scripts), and where real-world projects expose their limits (builds, requirements, missing project context). I share my current work on matching papers to repositories via embeddings at the project level rather than just functions - so models carry meaningful context across an entire codebase. [Read More]

During my discontinued PhD at DLR, I developed and trained a graph neural network to combine code embeddings into repository-level representations and align them with scientific publications. Preliminary evaluation showed a promising improvement over pooling baselines, as a first step towards finding related implementations and their underlying assumptions across research fields. [Read More]

In 2024, for our Walden Floor at Zugvögel Festival, the visitor was immerged into the crash site of an alien spaceship, featuring multiple interactive installations next to our usual dancefloor. [Read More]

This website is build using Hugo, a framework to generate static websites from markdown-files. This means that after the compile-step, there are only pure HTML-files, which can just be hosted on any webserver. While this has several advantages in terms of eg. speed, debugability, search engine optimization and much more, a big disadvantage is that there is no straightforward way to include dynamic content. As everything is unchanged from the compilation on, allowing for content dependent on user input or from real-time data, or just including content generated from other web frameworks such as Python’s flask or Django, is not easy. However, thanks to Javascript, it is absolutely possible to incorporate such dynamic content, as I have done for example in my CV, which is generated with my custom CV-Generator. [Read More]

I never really liked NFS, so I wanted another way to mount a drive from my QNAP NAS onto my linux machine. As I haven’t found any sort of instruction for that online, I’ll post how I did it here, in case anybody searches for the same thing.

The how is hurdled mostly by the fact that you cannot install SSHFS onto QTS, as the package ist not available for it. But as so often, the solution is Docker. We’ll just create an Ubuntu-Container where we can install SSHFS, and mount the directory we want to share as a volume. This of course requires that you have a NAS with Container Station, allowing to use Docker Containers.

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Having learned my ways on Theseus’ Anet A8 and now running a boringly reliable Bambu P1S, I use 3D printing and self-taught CAD as basic infrastructure for most of my hardware projects, some of which are listed here. [Read More]

My Ticket to Moyn Festival 2023, a nice one-week-project involving building something nice out of scrap material as well as implementing the software using a Microcontroller and a Raspberry Pi:

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For the last three years I’ve been part of the crew behind Fusion Festivals largest Floor: Palapa — a collectively built, ever-changing “city of the future” and dance floor. We turn a 1,200 m² tent into a dense skyline of handmade structures, layered light, and countless small details. [Read More]

VisioLab is a startup that creates automated self-checkout registers for canteens, where the meals on the tray are recognized on on-device via an iPad, allowing the customer to pay for their meals within seconds without requiring an employee.

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The Siddata project developed a digital study assistant that helps students find relevant courses, learning resources, and study partners using personalized recommendations. I developed machine learning recommenders and worked extensively on its Django backend, turning a research prototype that previously took days to deploy into a containerized, tested, and easily deployable system. My masters thesis was also conducted in the scope of this project. [Read More]

For this thesis, I created a Conceptual Space from Course Descriptions for explainable Recommendation, in a highly performant pipeline on the university-grid.

Sub-Pages:

• High-Level Intro
• Thesistext
• Snakemake & Sun Grid Engine

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After finally (and only for now) accepting that a reliable sound2light-bassline-detection is probably more trouble than it’s worth, I next needed a way for tap2bpm instead. This, however, required new Hardware, and thus, I developed this Button-Board.

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As a student research assistant at the Red Hen Lab, I worked on a video-processing pipeline for automatic gesture analysis in large video corpora. My work involved person tracking and identification using face recognition, shot segmentation, and deploying the pipeline on an HPC cluster using Snakemake and Singularity. [Read More]

This is a lampshade made of string, made for a free-standing lamp with a single light bulb in it. It is designed dim the bulb as little as possible and just be a pretty ornament whether the light is turned on or off. As the bulb is pretty visible inside the shade, I recommend a pretty one with warm light, such as an Edison-bulb.

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A comprehensive course, with lectures and interactive assignments, about Scientific Programming in Python, offered for three years at the University of Osnabrück. [Read More]

As part of the practical course following the lecture The C++ Programming Language at the University of Osnabrück, we had two weeks to develop a complete game in a team of 11 students, including a level editor. The project involved working with libraries such as Box2D for physics and Boost, as well as the HDF5 data format. We decided to develop Bomberperson, a Bomberman-inspired multiplayer game with a few additional mechanics.

The Game

Bomberperson is a maze-based multiplayer game for 2-4 players, where the goal is simple: eliminate the other players and be the last one standing. Players can place bombs that explode after a short delay, sending explosions in multiple directions, destroying obstacles and potentially killing other players. Destroyed obstacles can drop power-ups, which can temporarily improve a player’s abilities or make their life more difficult.

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A speech-controlled meditation assistant and sentiment tracker [Read More]

An automated pipeline to split a bunch of scanned pages into single documents [Read More]

Delving into the realm of self-driving cars for my bachelor’s thesis, I endeavored to optimize their tactical decisions, particularly speed, using cutting-edge deep neural networks and reinforcement learning in tensorflow within a transformed racing simulation. The resulting research platform, built on Unity, showcased the potential of real-time feedback and adaptability, offering valuable insights into the future integration of reinforcement learning in self-driving cars. [Read More]

In this 3D-Browser-Game developed in a computergraphics-project using THREE.js, the player is trapped in the infamous burning AVZ and must try to escape this inferno. The player controls the in-game character and must overcome obstacles, puzzles and traps to get to the bottom and out of the AVZ. Play here! [Read More]