3D printers can do a lot more than just printing nice little giveaways such as keyring pendants or chess pieces. During a project at the Holbein-Gymnasium Augsburg in Bavaria, Germany, students developed a number of helpful tools for chemistry lessons and tested them in classes. Full details of these are now available for free to any teacher who…

Described is a simple electronic interface that can receive signals from up to four analog sensors and four event detectors and save the data on disk. Schematic diagrams, construction details, sample temperature plot and weather station logging programs, and a parts list are included. (KR)