Computational Design and Single-Wire Sensing of 3D Printed Objects with Integrated Capacitive Touchpoints
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866911184096067584 |
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| author | Bae, S. Sandra Fujiwara, Takanori Szafir, Danielle Albers Do, Ellen Yi-Luen Rivera, Michael L. |
| author_facet | Bae, S. Sandra Fujiwara, Takanori Szafir, Danielle Albers Do, Ellen Yi-Luen Rivera, Michael L. |
| contents | Producing interactive 3D printed objects currently requires laborious 3D design and post-instrumentation with off-the-shelf electronics. Multi-material 3D printing using conductive PLA presents opportunities to mitigate these challenges. We present a computational design pipeline that embeds multiple capacitive touchpoints into any 3D model that has a closed mesh without self-intersection. With our pipeline, users define touchpoints on the 3D object's surface to indicate interactive regions. Our pipeline then automatically generates a conductive path to connect the touch regions. This path is optimized to output unique resistor-capacitor delays when each region is touched, resulting in all regions being able to be sensed through a double-wire or single-wire connection. We illustrate our approach's utility with five computational and sensing performance evaluations (achieving 93.35% mean accuracy for single-wire) and six application examples. Our sensing technique supports existing uses (e.g., prototyping) and highlights the growing promise to produce interactive devices entirely with 3D printing.
Project website: https://github.com/d-rep-lab/3dp-singlewire-sensing |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_25387 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Computational Design and Single-Wire Sensing of 3D Printed Objects with Integrated Capacitive Touchpoints Bae, S. Sandra Fujiwara, Takanori Szafir, Danielle Albers Do, Ellen Yi-Luen Rivera, Michael L. Graphics Human-Computer Interaction Producing interactive 3D printed objects currently requires laborious 3D design and post-instrumentation with off-the-shelf electronics. Multi-material 3D printing using conductive PLA presents opportunities to mitigate these challenges. We present a computational design pipeline that embeds multiple capacitive touchpoints into any 3D model that has a closed mesh without self-intersection. With our pipeline, users define touchpoints on the 3D object's surface to indicate interactive regions. Our pipeline then automatically generates a conductive path to connect the touch regions. This path is optimized to output unique resistor-capacitor delays when each region is touched, resulting in all regions being able to be sensed through a double-wire or single-wire connection. We illustrate our approach's utility with five computational and sensing performance evaluations (achieving 93.35% mean accuracy for single-wire) and six application examples. Our sensing technique supports existing uses (e.g., prototyping) and highlights the growing promise to produce interactive devices entirely with 3D printing. Project website: https://github.com/d-rep-lab/3dp-singlewire-sensing |
| title | Computational Design and Single-Wire Sensing of 3D Printed Objects with Integrated Capacitive Touchpoints |
| topic | Graphics Human-Computer Interaction |
| url | https://arxiv.org/abs/2509.25387 |