{"ID":2863907,"CreatedAt":"2026-06-01T04:54:23.091178241Z","UpdatedAt":"2026-06-01T04:54:23.091178241Z","DeletedAt":null,"paper_url":"https://arxiv.org/abs/2509.25387","arxiv_id":"2509.25387","title":"Computational Design and Single-Wire Sensing of 3D Printed Objects with Integrated Capacitive Touchpoints","abstract":"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","short_abstract":"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 touchpo...","url_abs":"https://arxiv.org/abs/2509.25387","url_pdf":"https://arxiv.org/pdf/2509.25387v1","authors":"[\"S. Sandra Bae\",\"Takanori Fujiwara\",\"Danielle Albers Szafir\",\"Ellen Yi-Luen Do\",\"Michael L. Rivera\"]","published":"2025-09-29T18:42:50Z","proceeding":"cs.GR","tasks":"[\"cs.GR\",\"cs.HC\"]","methods":"[]","has_code":false,"code_links":[{"ID":609083,"CreatedAt":"2026-06-01T04:54:23.091178241Z","UpdatedAt":"2026-06-01T04:54:23.091178241Z","DeletedAt":null,"paper_id":2863907,"paper_url":"https://arxiv.org/abs/2509.25387","paper_title":"Computational Design and Single-Wire Sensing of 3D Printed Objects with Integrated Capacitive Touchpoints","repo_url":"https://github.com/d-rep-lab/3dp-singlewire-sensing","is_official":false,"mentioned_in_paper":false,"mentioned_in_github":true,"github_stars":0}]}