The Newspaper Recklinghäuser Zeitung runs a series on inventers in the region. We were honored to be part of this. The article "Jede Menge Infos im Café-Tisch" (in German) is online at Medienhaus Bauer.
The article made me think again how we can motivate students to invent new things and applications. It is always a trade-off between giving students a very open project (where some are very creative and others just try to find the minimum requirement but it is not really clear what exactly the learn) and providing a clear assignment (where there is little space for own ideas but it is very clear what skills are trained).