Presented at
DEF CON 33 (2025),
Aug. 9, 2025, 2 p.m.
(45 minutes).
This project is an open source hardware powered air-purifying respirator designed for use as personal protective equipment, offering N100-level filtration against airborne threats including pathogens and particulates, developed by Tetra Bio Distributed. We will demo the PAPR and discuss how to hack together your own using 3D-printed and off-the-shelf components, source one yourself, or contribute to the project.
Presenters:
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Melanie "Goldfishlaser" Allen
Melanie is a technical writer and open hardware developer. At DEF CON 32, she presented the Open Hardware Design for BusKill Cord demo lab, inviting participation in the 3D-printed dead man's switch project. She continues to contribute to open hardware and software initiatives that promote digital security and public accessibility. Learn more at mnallen.net.
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Sean Marquez
Sean has a B.S. degree in mechanical engineering, specializing in design of mechanical systems, from the University of Irvine, California. He is currently studying permaculture design. He worked as an associate mechanical design engineer for Max Q Systems, formerly an original equipment manufacturer for the aerospace industry. He served as the GreenHab officer at the Mars Desert Research Station. He is also a contributor for the Open Source Hardware Association open standards working group, Tetra Bio Distributed developing open-source hardware medical and PPE devices, and the Mach 30 Foundation developing the distributed open-source hardware framework.
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