SoilTile: Soil-based Ground Sensing
Tsukakoshi Yuma, Tian Min, Chengshuo Xia, Anusha Withana, and 1 more author
The 38th Annual ACM Symposium on User Interface Software and Technology (UIST Adjunct ’25), September 28-October 1, 2025, Busan, Republic of Korea, Sep 2025
We present SoilTile, a novel ground sensing approach that explores soil as an interactive medium. Built upon the principles of Soil-based Microbial Fuel Cells (SMFCs), SoilTile draws on the natural electrochemical interactions between soil and embedded electrodes—not as a source of energy, but as a way to sense physical contact through electrical response. When pressure applied to the cathode, SMFC produce measurable variations in output voltage. Building on this phenomenon, we construct modular ground sensing units that detect localized pressure through a matrix of electrodes, structured to respond under human activities or object placement. With its minimalist structure, DIY-friendly fabrication, and potential for seamless integration into natural environments, SoilTile offers a simple, material-driven platform for designing interactive spaces.