A prototype process of a physical user interface includes not only connection of electronic parts and an enclosure design, but also the arrangement and configuration of the electronic parts in the enclosure. This process is complicated and difficult for people who do not have modeling skills. We propose ProtoHole, a technique for adding interactivity to 3D printed objects by creating holes in the surface. By emitting a high-frequency sweep signal inside the object, and classifying changes in resonance properties when closing holes using machine learning algorithms, an object can be easily made interactive. By designing an arrangement of holes on the surface of the object and using a swept-frequency acoustic sensing, it is possible to create prototype of interactive objects and physical user interfaces without considering an arrangement of internal electronic parts and wiring.

  • Shohei Katakura,Keita Watanabe. Prototyping Interactive 3D Printed Objects Using Holes and Acoustic Sensing, CHI ‘18 Extended Abstracts on Human Factors in Computing Systems(CHI2018), Apr 2018
  • 片倉翔平,渡邊恵太. ProtoHole: 穴と音響センシングを用いたインタラクティブな3Dプリントオブジェクトの提案. WISS2017(デモ・ポスター発表), December 2017