Line-up for Koppelting 2025

Annual DIY-festival focusing on open knowledge and bottom-up solutions for society, from citizen science, journalism and technology to clothing, food, democracy and more.

hackathon: Fablab Amersfoort - Let's make a pet bottle filament maker

There's movies on the net that show people making filament from PET-bottles.
Let's try that too!
(Image from Printables)

hackathon: Diana - develop a small tempeh maker for your kitchen

After having tried to build a tempeh maker from an open design, I decided to start over from scratch. My goal is to make an automatic tempeh maker for one or two pieces of tempeh.
We will make the housing, electronics and control software.
You might go home with your own tempeh maker!

hackathon: De WAR - an open mesh network for communication

In this hackathon we will test some devices for mesh communication over Lora. We will use meshtastic and some other protocols.
We will play with the hardware and start a lokal network for emergency communication.

workshop: Harmen G. Zijp - Public Tech Skill Tree

In this hands-on workshop on digital autonomy you'll find out how to become less dependent on the solutions Big Tech has to offer. Bring your devices and start using the Public Tech Skill Tree, step by step, to visualize your skill progress, identify skill gaps and get inspired to try new things.

other: Harmen G. Zijp - Unprepping: keeping a balance between indifference and panic by building a future for better or worse

Watching the news can be unnerving these days. Climate change and other crises loom large and our political system seems woefully inadequate to handle them. Staying passive is not an option but acting is difficult as well. After all, what difference can one person make? It can be hard to avoid the pitfalls of futile panic streaks or a cynical retreat. In this session I want to explore what can be done to be prepared with out ending up in full camouflage behind a wall of canned beans. Some actions will also prepare us for an optimistic future. Let's identify them and start work.

other: Joris Van Dorpe - What kind of biolab does De WAR wants?

Now that the realization of the new citizen science biolab comes closer, we can rediscuss for which applications we would like to use it for. It might inspire us all to make it functional sooner.


lecture: Initiatiefgroep Gelote Burgerraad - Proceedings of the Citizens's Assembly

This year, the first Citizens' Assembly convened in Amersfoort. A group of 54 citizens, selected by lot, came together to discuss on the topic of waste reduction. How does the Citizens' Assembly work, what came out of it and what has to be changed for the next round?

hackathon: Joris Van Dorpe - Biolab construction

Come and join the construction of your own citizen science biolab!

In this hackathon we will continue to build the biolab to make it functional as soon as soon as possible and in line with the ethical charter in our website.

hackathon: Stefan Lehner - Sandbattery

Let's build a simple but working sand battery. With the sun collectors on our roof we try to heat up sand up to 800 degrees. The sand container is very wel isolated. With the heat energy we can heat water when demanded or trough a generating system again electric energy.