Artistic Technology and Development
I develop technology — software and electronics — for art and music projects, ranging from commissioned one-off instruments to commercial projects. I do this because I find that technology can expand our ability to express ourselves as artists, as well as expand our ways (as viewers/listeners/audioence) to experience art.
Also, it’s fun.
That’s why I make things that generate music, make motors move, map sensor data to musical parameters, or things that just help musicians and artists create.
I open source and share some of my projects on the website Codeberg. Follow me there to keep up with developments: codeberg.org/hyaline.systems and codeberg/madskjeldgaard.
The technology I develop for myself, I try to make as general purpose and useful for others as possible, and I put a lot of work into documenting and open sourcing a lot of it, in the hope that someone else might benefit it. If you want to support this effort, please consider sending me a donation via ko-fi.
I also teach workshops in some of this stuff from time to time. Keep an eye on my calendar, if you are interested in those.
Below you will find a selection of some of the art-related technology I have developed or been a part of developing.
Making electronics for Moans and Groans 2025.
A temporary sculpture of found objects at Sound Art Lab, Struer, controlled using my Hyaline Motor Controller XL i2c board.
Working with NOTAM on a 4th order ambisonics rig for 3D sound concerts in Oslo, Norway.
A vibrator object, recreating the wind in the trees through vibrator motors and custom electronics (my Teensy Haptic Audio Player board).
Selected Technology and Development Projects
SuperCollider DSP plugins and language extensions (2026)
Sound effect plugins and code for algorithmic composition
Tiny Analog Motor Controller (2025)
Simple, small and powerful analog motor controller.
Pico Programmable Audio Board (2025)
Audio development board for the Raspberry Pi PIco
Hyaline Motor Controller XL i2c (2025)
Control motors using Raspberry Pi Pico (5v-15V, 4 DC motors or 2 stepper motors).
Teensy Haptic Audio Player (2025)
Vibration motor controller and high quality DAC for the Teensy 4.0.
Birdhouse (2024)
An open source VST/CLAP plugin that bridges OSC to MIDI in an easy and effecient manner.
Sustain2MIDI (2024)
Convert a sustain pedal to a usb midi controller.
Torso Electronics S-4 (2024)
A futuristic, sculpting hardware sampler.
Sparrows (2023)
Low cost DIY sensor network devices for installations and interactive arts.
Teensy Head Tracker (2021)
DIY 3D audio head tracker for interactive ambisonics/spatial audio using headphones