Creation of a Tabletop Game

A field report by Tim Dümpelmann

When I entered the Fab Lab for the first time in November, I was really amazed that there was such a great place here in Siegen. The people were very nice and open-minded and I felt comfortable right away. I guess it’s also because I’ve always been a bit of a technology nerd.

An Idea is Quickly Found

The 3D printers have aroused special interest in me. Not only because it was exciting to watch them work, but also because I am somewhat involved in 3D modeling as a hobby. Over the next few weeks, I was at Open Lab every Friday. There I met many nice, interesting people who were all working on great projects.

I think creativity is somewhat contagious. Therefore, it did not take long and I had also decided on my first project:
i wanted to create a tabletop game, model all the game pieces myself and make them with a 3d printer.
Since I had just rendered a great picture (see below) of a “MechMiner” for a science fiction contest, I took it directly as a template for my first figure, the “resource collector”.

The Right Manufacturing Process

Then I just started modeling. In doing so, I often reached the limits of the FDM printing process due to the small dimensions of my figures and the many details in the 3D models. Therefore, I considered a modular plug-in system to be able to print as efficiently and detailed as possible. I was offered to use an SLA printer, which has much higher precision, but dealing with resins and other liquids is not really my thing.


Build, Build, Build

With most problems, both in modeling and in manufacturing, someone was always ready to help me. Since the laser was a little more complicated to use than the 3D printers, I was also quite happy about it.
Since the laser was a little more complicated to use than the 3D printers, I was also quite happy about it. This one was perfect for making a nice modular game board. At the moment the game is not finished yet, so here you can see only a prototype for testing the game mechanics.


It will be some time before the first version can be played. Balancing will take a long time, and there are still many game cards to be designed.
I have already put the 3D models into a Github project. Stay tuned!

And Around It: The Lab

I myself could also help some people with their projects with my knowledge, and it makes me a bit proud :). I think coming together and working with like-minded people is what makes Fab Lab such a great place.
The technical competence of the staff is high and they do their work very professionally.
The Lab provides opportunities for everyone to try out technology. And I definitely found some people there that I would call friends.
In the meantime, I own my own 3D printer to move the project forward.
Thanks again to everyone who helped set up and troubleshoot!


In my opinion, a place like the Fab Lab is an enrichment for Siegen. I just don’t understand why so many people walk past it. 😮 Anyway, I’m looking forward to spending more time there.

Until then: Happy work!

A Raspberry Pi Case Rarely Comes Alone

A field report by Henning Schroeder

In mid-January 2019, during the course of a project with my Raspberry Pi (Wikipedia) 3B+, I was looking for a suitable case that would hold my PI with a 3.5-inch TFT screen. Since I’m new to Raspberry Pis, I thought that doing as much as possible myself would get me up to speed faster than click and buy products from various online markets. With this in mind, I searched for a company in Siegen that performs 3D printing. Right on the first Google run, I came across the Fab Lab website. After a quick phone call to the Fab Lab, I got the info to just come by the following Friday. So it happened that shortly after I entered the Fab Lab I was shown the entire Fab Lab, the staff and the equipment in an extremely friendly manner. The concept of the Fab Lab was previously only known to me from articles on the web. However, this still seemed a long way off for a city like Siegen. All the more I was surprised and thrilled. Everyone present made a very nice impression while focused but always helpful in the Fab Lab.

The 3D Model and Printing

So, with the help of Fabian, I started using the Slice program (Wikipedia) to prepare the file I had previously downloaded via Thingiverse for the 3D printer, brand “Prusa“. After slicing, we exported the generated G-code (Wikipedia) to an SD card, again plugged it into the 3D printer, and started preparing it at the printer. This consisted of removing any previous printing residue from the printing plate with an alcohol solution and then briefly polishing it. After that, we started printing with a few keystrokes. According to the ad, this was supposed to last longer than the Fab Lab’s opening hours, whereupon Fabian made me the offer to put the print on a shelf after it was finished, from which I could pick it up at any time. After a few more Q&A situations that I needed to understand the complexity of the community/open source model in Fab Lab, I left.
Print of the Raspberry-Pi housing

Mistakes Lead to New Ideas

Of course, only to return to the Fab Lab three days later in the evening, full of excitement.
I tried to insert the PI including the screen into the case directly after I had fetched the case from the aforementioned shelf. Unfortunately, the top layer of the screen cracked in the process. This can probably be attributed to the ambient temperature at that time, which is probably not very good for a screen at 0°C. Mistakes in a project and frustration lead to new ideas (at least for me).

A Project Rarely Comes Alone

So it came that I was looking for a new housing project. This I started slightly smaller and simpler than the screen case. Again on Thingiverse. Once again soaking up ideas. Using software called Blender (Wikipedia), I created a “thrifty” cage-look bumper case over many hours of gruesome desperation. The next Friday, for the next Open Lab, I sought out the Lab again to dive into 3D printing. After a little help from the Lab visitors and staff present, the bumper case printing began. This one also worked to complete satisfaction and fits spot on.

Now I am busy with my thoughts around the next project at Fab Lab Siegen.

3D Models to Copy and Develop

The 3D models for the Pi cases are also available for download:

Fab Lab Siegen in Regensburg – A Makerspace at the Mensch und Computer Conference 2017

What do four people do with a station wagon, a lot of luggage, various boxes full of stuff, a 3D printer, virtual reality equipment, moderation cases and toolboxes? – Right. Play Tetris.

On Saturday, 09.09.2017 in the afternoon we packed some of the most beautiful treasures and a little hardware from the Fab Lab and headed to Regensburg to the Mensch und Computer (MuC) Conference, which took place from 10-13 September 2017. Interested parties and experts from the fields of human computer interaction, user experience and usability meet there every year. Not only professors, researchers and students can exchange their research results and projects, but also representatives of different companies and developers are on site to make contacts, gather inspiration and inform themselves.

The focus of such a conference is on submitted written contributions in the form of scientific papers and posters on a specific topic, the contents of which are presented as presentations. In addition, workshops will be held. Fab Lab Siegen should be represented in such a workshop. In keeping with the theme of the conference, “Interacting easily through play”, we decided to have an open Makerspace that could be visited at any time on one of the conference days.

Together with committed members from Hackspace Regensburg – the Binary Kitchen – we transformed the drab concrete look of the conference building at the University of Regensburg into a colourful and flashing place on Monday, inviting people to interactively find out about Fab Labs, Hackspaces and Maker Culture between coffee and lectures. Under the motto “Make – Hack – Learn – Share”, visitors were able to create 3D models in virtual reality, which they could then either place in the real world as augmented reality holograms using the Microsoft HoloLens or even print out using the 3D printers. Different exhibits and projects from the Fab Lab caused general amazement and interest. However, the many lighting gimmicks of the Binary Kitchen have also attracted the most attention. In a mini-soldering experience, the conferees were able to assemble their own flashing clothes peg.

The Makerspace was represented at the Mensch und Computer conference for the first time and was a great success. The visitors were enthusiastic and after the positive feedback we hopefully were not there the last time.

Cytrill – Game Controller Made in Siegen

Hackspace Siegen has developed a single-board computer for gaming, education, and experimentation that allows over 32 people to play together on one screen at the same time – a collaborative project for which our Fab Lab, among others, was used. From hardware to games, everything at Cytrill is open source.

It took about a whole year until the members of HaSi could hold the first finished controller in their hands. The idea was there, but a lot of thought went into the implementation: what should the game controller look like in the end? Which design is best for the use? In the end, a small, colorful single-board computer was created, which is similar in appearance to well-known controllers. Apart from the many buttons, the minimalistic, differently colored grips, which are plugged into the sides of the board, are striking. These grips were printed from PLA with the Luzlbot in our Fab Lab.

In the future, however, a second variant will also be created, in which two transparent Plexiglas plates are used instead of the grip panels, so that the complete circuit board remains visible. This variant is to be produced as a prototype in our lab using laser cutting.

Meanwhile, there are already several games for the controller: “Wallhack” (similar to Achtung the Curve), “RaceCtrl” (a car race), “Crystal Mett” (a game in which you have to collect crystal pigs in teams) and “SpaceCtrl” (a spaceship game). All games were created in the open source game engine Godot and so there is a GD script that controls the LEDs on the controllers that show the status or the current game color. The board itself is based on an ESP8266 radio module and has four small joysticks on each side. The controllers have a USB interface, but this is only used for loading and programming. Wifi is used to connect to games and applications, and power is supplied via a battery. The plates are decorated with an octopus and gold details.

Cytrill and individual games could already be tested in public, for example (as seen above) on the Day of Technology or the Siegen Art and Culture Week Art!Si, and gave pleasure to both young and old. The small colorful controllers attracted attention and as soon as they were tried out, some could hardly detach themselves from them. People who didn’t know each other before played against and with each other with visibly a lot of fun, much to the delight of the developers.

In the future, Cytrill will be used in workshops at our Fab Lab, but also for university teaching. The invention shows that the hacker and maker culture has already arrived in Siegerland and that it enables jointly developed, innovative projects.

Cytrill on detail:

Aya – a Selfmade 3D Printer

Aya – that’s a 3D printer that students of the Human-Computer Interaction master’s program produced in the winter semester 2015/2016 as part of the “3D Printing” seminar.

At the beginning of the seminar, the students were first familiarized with the basics of digital fabrication: What manufacturing processes are there, what materials can be used for printing, what are the possible application potentials? They also learned more about the individual steps of 3D printing: from modeling, to slicing (the “translation” of a 3D model into instructions for the printer), to the printing itself. For the subsequent project work, four students decided to devote themselves to building their own 3D printer.

The project participants used a kit as a basis, which already contained most of the parts needed for construction. All blueprints as well as the control software are available open source and so the students first built the printer according to the distributor’s template. However, they quickly discovered that not everything was working properly. So they decided to print some housing parts themselves using a different 3D printer in the Fab Lab and made other changes to improve print quality, such as adjusting the holder for the consumable. This was followed by a longer calibration phase, because the automatic support systems, which the printer actually has for this, unfortunately didn’t work quite as well as expected.

The students spent an entire semester working on the printer, which they named Aya (after a Japanese movie character). Aya is a Delta Robot 3D printer whose distinctive feature is its design: The three-axis system, which differs from conventional printers with linear axis systems, enables fast, precise printing. In addition to smaller test prints, the first larger prints such as an owl or a vase have already been made. Initial test runs indicate that Aya can print at a fabulous speed of up to 300-350 mm/second.

Even though the study project has now been completed, the students want to continue working on optimizing the 3D printer. For example, the installation of the control electronics or the stabilization of the base frame is being considered here to make Aya more transportable. There are also plans to test Aya with other materials such as ABS – the plastic used to make Lego bricks, for example – because so far only PLA, an environmentally friendly plastic based on (corn) starch, has been used as a material.

The students themselves learned a lot about 3D printing during the seminar and by building Aya. On Technology Day, the printer was presented and used for the first time in front of a broad public.

Aya in full size:

Yallah – You All Are Hackers

“YALLAH- You all are hackers” is an international exchange and cooperation project between the University of Siegen and Birzeit University in the West Bank in Palestine. The project is funded by the DAAD program “University Dialogue with the Islamic World” and will be implemented for the first time in 2016. In two exchange phases of four weeks each, ten students from one university visit the other country. In addition to getting to know the region, culture and people, it is also about working together on projects that focus on local issues. The goal is the joint development of creative and sustainable approaches to solutions, in the implementation of which the students also make use of digital fabrication methods, which happens, for example, in the Fab Lab Siegen or in and around (hack/maker/*) spaces in Palestine.


As part of the first exchange phase, ten students and two staff members of the University of Siegen traveled to the West Bank this April, excited and full of expectations. After an initial orientation phase with many new impressions, all students from both universities brainstormed together to develop project groups dedicated to the various problems and possible solutions.

One project group, for example, dealt with the computer club in the refugee camp “Al-Amari”, which on the one hand aims to promote intercultural exchange between Palestinians and refugees on site, and on the other hand offers a collaborative and playful addition to the limited educational opportunities in refugee camps. The club was already established in 2013 as part of research work for the come_in project. The students first took care of repairing the infrastructure on site and developing new workshop ideas with the available resources. Afterwards, several workshops were held with children, in which they were taught the simple basics of electrical engineering so that they could directly build their own first circuits. Even after the first exchange phase, the on-site workshops are still continuing.

Another project group dedicated to the (plastic) waste problem frequently found in the Middle East (as in so many parts of the world) developed, among other things, the first prototypes of edible cutlery made of dough and conducted a study on plastic bag consumption in supermarkets. Another project team built a small garden in the refugee camp under the title “Urban Gardening”, for which, among other things, plastic bottles were recycled as watering cans and planters. The individual groups repeatedly made use of principles of hacker and maker culture in their projects.

But outside of the projects, there were other points of contact with hacker and maker culture, as well as with digital fabrication opportunities on the ground. For example, students participated in an Arduino workshop at the first Palestinian hackspace, Vecbox. In addition, students and staff from Siegen, who are currently also actively involved in setting up our Fab Lab, held several 3D printing workshops at the university, where not only were the basics of 3D printing taught, but the participants also designed and printed their own first 3D models together. As a prerequisite to holding the workshop, the available 3D printer was also collaboratively maintained and serviced. In the course of this, the university partners of the University of Siegen were also able to advise a professor on site on the purchase of a new 3D printer.

During the four weeks on site, the students experienced a lot. A lasting impression was left in particular by the strong contrasts between innovation and tradition that are lived out locally. For example, a horse plowed a field right next to the Hackspace, where innovative technologies like 3D printers are used.

In summary, a trend toward innovation via a community-oriented hacker and maker culture – as in many places around the world – is also evident in Palestine. However, the development, elaboration and dissemination of these trends, which ultimately also have a great deal to do with self-determination, are always faced with major challenges. Yallah is one piece of the puzzle of many in the establishment of global collaborations at eye level, in which creativity, self-determination and the use of (digital and distributed) fabrication methods play important roles. In August, the second exchange phase begins, which will take place in Germany and during which the students also want to further develop their solution approaches at our Fab Lab. You can read detailed reports about the experiences during the exchange so far on the project’s blog.

Zeit.Raum – Making Siegen come alive

The interdisciplinary research project ZEIT.RAUM Siegen is being carried out in close cooperation with citizens and aims to make the city of Siegen experience and understand its space and history in a collaborative way using innovative technology. ZEIT.RAUM is designed to facilitate collaboration and exchange between all interested parties – from academics and students to schoolchildren and amateur historians – about the city’s history, present and future. This opens up new forms of knowledge generation and transfer.

The project consists of two interlinked components: A touchable table-sized city model for interaction, produced using various digital fabrication processes and exhibited in the Siegerland Museum. Built-in sensors enable an interactive experience of the city and its history, which also stimulates individual memories. The second central element of the project is the Stadtwiki, a collaborative digital platform on Siegen’s city history, which is being developed by and for citizens. In addition to collecting information, it also serves as a forum to discuss the meaning of the data collected. Places of remembrance are identified, processed and reflected upon. All components of the project should be designed in such a way that they are easily accessible, understandable and easy to use for all interested parties.

One of the first test prints for the interactive city model

The role of the Fab Lab

We at Fab Lab are also involved in the project on several levels, especially in the creation of the interactive city model. The existing virtual 3D model of the city of Siegen, which was created by Prof. Jarosch, serves as the data basis for this. The topography is milled out of a large plate in the Lab. Which material is best suited for this is currently being tested. The true-to-the-original buildings of the city installed on it, on the other hand, are printed with the 3D printers in the Fab Lab. The sensor technology that will later be installed in the city model, which should be as user-friendly as possible, is also being developed in our lab. Several students are also involved in the project, working on individual components of the project within the framework of qualification theses.

Paper prototype for the interaction concept of the city model

Current developments

Currently, students are working on the design of the interaction concept and have, among other things, created a paper prototype of the city model. Likewise, the first prototypes for the city model have already been successfully printed and the sensor technology extensively tested. The model is printed with conductive filament so that the sensors can later be built directly into the city model. As part of this initial technical work, a developer board (see cover picture) was also created on which the following were installed: Arduino-Leonardo, Raspberry Pi 2, CAP1188-Breakout, 3D-printed touch sensor and 3D-printed matrix.

Test of the sensor technology to be installed in the city model

During one of our last project meetings, a first model of the Nikolaikirche – probably the best known landmark of the city of Siegen – was already printed. It took our Ultimaker a whole three hours to make the 1:9000 scale model.
Here you can see the result:


Other project partners

In addition to the Fab Lab, the University of Siegen also involves the Chair of Didactics of History headed by Prof. Dr. Bärbel Kuhn, the Chair of Practical Geodesy and Geoinformation headed by Prof. Dr. Monika Jarosch and the Chair of Computer Supported Group Work headed by Prof. Dr. Volkmar Pipek. The realisation was made possible by the support of the university and the Friends and Patrons of the Siegerlandmuseum, who see the project as an investment in the future of the Siegerlandmuseum. The Siegerland Museum is to be strengthened by ZEIT.RAUM in its role for cooperative and inclusive historical work in and with the region.

We will of course keep you informed about further developments of the project in and around the Lab.

The origin of Fab Lab Siegen

Efforts to establish a Fab Lab at the University of Siegen are not entirely new. On a smaller scale, similar activities have already been carried out at Faculty III:

The HCI lab there also provides infrastructure (e.g. 3d printers) to some extent. Even though the HCI Lab is also quite open in principle, there are no Open Lab Days here, the equipment is not extensive, the area is very small and, in addition, the room is often needed for chair activities and can then of course not be used by everyone. However, we explicitly mention the HCI-Lab here, as its operation has already created quite a bit of expertise, especially in areas such as 3d printing or also Arduino. The Fab Lab Siegen and the HCI-Lab will therefore collaborate closely (e.g. for courses and workshops) and possibly consolidate hardware and equipment in some cases.

Hackspace Siegen

It is always impressive how many exciting, self-organized and open activities are already happening in a rather small city like Siegen. One such venture is Hackspace Siegen e.V. (HaSi).

A hackspace and a Fab Lab are conceptually quite similar – both are open, creative environments where projects can be realized, lectures and workshops are held, and quite a few other exciting things happen. Basically, though, you can say that a Hackspace is more software-oriented, while in a Fab Lab you focus more on production and hardware with machines and tools. For this reason, both concepts complement each other perfectly and Fab Lab and HaSi will work in lively exchange, support each other for projects and make good use of the different competences!