Embedded & Firmware
Bare-metal firmware for STM32 and friends, and tailor-made embedded Linux systems with Yocto and Buildroot.
Quelltextlabor
Bits Beats
We develop microcontroller firmware, embedded Linux systems, real-time engines and UI applications for electronics manufacturers and the music industry – and for Mosaik, our own instrument.
Panketal near Berlin
Services
From firmware to app.
We cover the full stack of a connected audio device – including the unglamorous layers in between.
Real-time Audio & DSP
Low-latency audio engines, streaming and codecs. Experience tuning latency, performance and stability.
Desktop & UI
Native interfaces with GTK and Qt, embedded UIs with LVGL – including international typography on tiny displays. Reactive and cleanly separated from the logic.
Build, DevOps & CI
Reproducible builds, cross-compiling and delivery – from CMake to containers to over-the-air updates.
Hosting & Operations
We run servers – our own and our clients’: self-hosting with Docker Compose, from Nextcloud and mail to container registry, build agents and backups.
AI-assisted Development
We use AI agents productively in everyday development – for refactoring, testing and modernising large codebases.
Our own product
Mosaik
A live performance groovebox, made for the stage.
Together with our partners for mechanics, electronics and UX/UI, we develop, build and sell Mosaik – a standalone instrument in a rugged full-aluminium housing.
It combines sampling, step sequencing, live jamming, looping, DJing and mixing – a complete setup without a computer (dawless), made for the stage. We own the software at every level: the firmware of the controls, the real-time audio engine, the Linux system and the hardware UI.
That makes us not just a service provider, but a manufacturer too.
- Custom real-time audio engine on Raspberry Pi
- STM32 firmware for 80 RGB-lit switches and 7 endless encoders
- Tailor-made embedded Linux built with Yocto
- Curated sample libraries including artist packs
Hardware in numbers
- Display
- 10.1″ multitouch
- Keys
- 80 RGB switches
- Encoders
- 7 endless, RGB
- Tracks
- 36 in stereo
- Sequencer
- 64 steps
- Audio
- 4 in / 4 out
Clients
Who we work for.
As an independent development partner, we have supported manufacturers of audio hardware for years – commissioned per project, self-directed and with our own infrastructure.
Teufel
Audio hardwareDevelopment of audio-streaming software in modern C++ – from architecture and implementation to automated testing, for networked audio devices.
teufelaudio.comNonlinear Labs
Professional synthesizersDevelopment of several instruments – the C15 and C25 among them: audio engine and DSP, STM32 firmware, the LVGL hardware UI and web-based preset editors.
nonlinear-labs.deConsistency
Years of experience with industry standards.
Some of these tools we have used for over 15 years.
- since 2008 Embedded Linux with GLib/GObject and Buildroot
- since 2013 Web development with Java, GWT, JavaScript and HTML/CSS
- since 2016 Tailor-made systems with Yocto
- since 2017 Arch Linux for embedded PCs
- today Modern C++, Rust and AI-assisted development
Technology
Toolbox.
A selection of what we work with every day.
Languages
Audio & Embedded
System & Build
Contact
Let’s talk about your project.
Whether it’s audio hardware, a stalled embedded project or a codebase that needs modernising – drop us a line.