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Annuli visualizes the book lending at the University of Applied Science in a new and interesting way

Concept of Annuli

Annuli is an interactive installation, which contains the book-lending statistic of the University of Applied Science Osnabrück. It visualizes the knowledge transfer of the students. The resulting growth of knowledge involves the analogy of a tree which grows when knowledge has been transferred.

The roots are the foundation of the installation. The book-lending is visualized by a coded light within the root that migrates to the tree like a nutrient. The borrowed book will then be printed with help of an integrated 3D printing head. A new data ring in the tree trunk is the result of this printing process. In a period of one semester a pie chart will be created for each day, which visualizes the amount of borrowed books from the different locations of the University of Applied Science Osnabrück.

The crown is the final element of the installation. The whole knowledge of the semester comes together in this section. If somebody submits his bachelor or master thesis, the crown will shine in coded colored lights.


The user interface extends the resulting analog artifact by an digital component. In interaction with the touch table the user gets the possibility to receive more detailed information about the data visualization.

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A huge amount of effort and passion was put into prototyping the finalized idea. Although the resources – both time and materials – were to limited to build Annuli in its entirety, parts of it were realized in a smaller scale.

The prototype consists of a 1:1 model of the root, a 1:25 miniature model of the whole installation and a website to control it. Visitors of an exhibition could use the website to simulate the lending of a book and watch the model react to their inputs. The big root could be connected via USB to the small model and shed a warm, diffused light every time a virtual book got lent.

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Annuli emerged from the the module Interactive Motion Media II and was created together with Lennart Bramlage, Dirk Erdmann, Ronda Ringfort, Robert Schnüll and Niklas Thyen. The project was nominated for the aed Neuland 2015 "Exhibition & Public Design" and exhibited at the European Media Art Festival 2015.

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