Multi-Touch Kit: A Do-It-Yourself Technique for Capacitive Multi-Touch Sensing Using a Commodity Microcontroller
Author(s)
Pourjafarian, Narjes; Withana, Anusha; Paradiso, Joseph A; Steimle, Jürgen
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Copyright © 2019 Association of Computing Machinery. Mutual capacitance-based multi-touch sensing is now a ubiquitous and high-fidelity input technology. However, due to the complexity of electrical and signal processing requirements, it remains very challenging to create interface prototypes with custom-designed multi-touch input surfaces. In this paper, we introduce Multi-Touch Kit, a technique enabling electronics novices to rapidly prototype customized capacitive multi-touch sensors. In contrast to existing techniques, it works with a commodity microcontroller and open-source software and does not require any specialized hardware. Evaluation results show that our approach enables multi-touch sensors with a high spatial and temporal resolution and can accurately detect multiple simultaneous touches. A set of application examples demonstrates the versatile uses of our approach for sensors of different scales, curvature, and materials.
Date issued
2019Department
Massachusetts Institute of Technology. Media LaboratoryJournal
UIST 2019 - Proceedings of the 32nd Annual ACM Symposium on User Interface Software and Technology
Publisher
Association for Computing Machinery (ACM)
Citation
Pourjafarian, Narjes, Withana, Anusha, Paradiso, Joseph A and Steimle, Jürgen. 2019. "Multi-Touch Kit: A Do-It-Yourself Technique for Capacitive Multi-Touch Sensing Using a Commodity Microcontroller." UIST 2019 - Proceedings of the 32nd Annual ACM Symposium on User Interface Software and Technology.
Version: Final published version