The Sunlight Regulatory Device License
This is an attempt to construct a new kind of free-libre open source license aimed specifically at medical devices. The COVID-19 pandemic has demonstrated the need for open, transparent devices which are both suppy-chain resilient and fully tested under normal regulatory regimes. In order to build an system of for-profit and non-profit firms that support such devices to alleviate want now and in the future, we believe a license that encourages a new kind of sharing is required: one that allows re-use of device designs and test documentation by forcing publication at the time of reuse for regulatory clearance.
This is an attempt to build a passive ferrofluid one-way valve. If this could be accomplished, it would be much easier to make a pump-on-a-chip. My previous attempts to do this were deeply flawed (see below).
I am now attempting to build a (very simple) physics simulation of planar ferrofluid to test out some additional ideas before 3D printing. This was inspired by a Public Invention volunteer, Veronica S, who did the initial CAD design compiled from my previous thoughts, causing me to realize some flaws to the initial design.
The COVID-19 pandemic has demonstrated a clear and present need for a complete, free-libre open-source, easily repairable, widely usable, safe and effective respiratory support medical device ecosystem. Public Invention asks that you support our project to create such a system, to be called The Freespireco Project.
The Ox Project
This project seeks to design and prototype a scalable, open source oxygen concentrator for medical therapies in rugged environments. We have developed a design and prototyped/presented it at our most recent respiratory conference; however, we could always use more help to improve the project further.
PolyVent is a diverse volunteer team of international engineers, scientists, clinicians and other professionals who have joined forces to design, build and produce a clinical-grade, open-source ventilator in response to the COVID-19 crisis and the resulting global shortage of ventilators.
Project #51: Moonrat: A portable Incubator
A small, intelligent, portable, battery powered incubator will enable a wide variety of biological experiments and assays to be performed “in the field” far from a standard laboratory.
“Watching so many teams start working on ventilator designs, Robert Read and the Public Invention team have decided that the best way they can contribute is to make an in-line monitoring device. This would be a tube that connected near the patient and would track the flow and pressure of gases as they entered and left the patient. Much of the rest of the document discusses flow and pressure sensing, but it worth noting that such a simple device like this is extraordinarily valuable and most definitely life-saving.” – Erich Schulz, MD
Public Invention accepts and publishes a wide variety of humanitarian invention ideas. Some of these are just a simple idea; some have a one-page, and some are fully developed projects with sophisticated prototypes. All of them need volunteers with a wide variety of skill sets! Because it changes constantly, please checkout our spreadsheet.
Project #44: social tetrahedrons
This is an interactive 3D simulation for representing Mark’s conception of the fourth dimension as “abundance” or “condition,” which may be thought of as power or development. It is represented as a slider in this visual application.
The ultimate purpose is to match needs with offers, for example to work on technical projects, base on an interpretation of Maslow’s Pyramid, having four dimenstions. People express their desires by placing themselves on a tetrahedron that captures, for example, the Mind/Body/Spirt and Abundance situation, and might then be matched with projects that are suited to them. Exactly how this will be done is still being worked out; this is a step.
Project #46: triad balance interactive diagrams & GUI elements
This interactive page presents what may be a new graphical user interface element — the “triad-balance” diagram. The purpose is to use a single click on a triangle to enter three values such as “Mind/Body/Sprit” or “Strength/Endurance/Flexibility” that are presumed to in some sense be “in balance”, or where it is interesting if they are in balance. The Triad Balance widget is fully responsive and stylable in css.
This is an open source demonstration project of Public Invention. This grew out of the project Social Tetrahedrons instigated by Mark Frazier. Although I searched a good bit, I may have missed a previous implementation. If the triad-balance diagram has been implemented previously please inform me at
Project #64: Geotagtext
This is a system for easily using a phone or computer to tag a geolocation with a simple message. We have a prototype available here: https://geotagtext-server.herokuapp.com/
Project #43: software to compute helix from repeated object stacking
Project #45: segmented helices generated by chains of repeated units
That a number of physical objects, such as the Platonic solids, can generate helices, has been published in scattered papers. However, the math to determine the radius and rate of rotation from the underlying object has never been studied.
Ventilator Verification Project
This is a project to match teams building emergency COVID-19 ventilators to teams able to verify the clinical suitability of those ventilators. The goal is to give clinicians the confidence to deploy a last-resort device by proving that is has been functionally tested, burned-in for 48 hours, and is clinically suitable.
Project #48: GlussCon
By building a “puppet”, a hand-held controller of a larger robot, we hope to allow a workperson to effectively control a rescue robot that could clear or search rubble.
Project #41: rapid E. coli presence detector
In volunteering for Engineers Without Borders, we learned of the critical need to evaluate water for fecal contamination in remote field locations without laboratory-style equipment. Shortening the time to quantitatively measure fecal contamination would help in providing clean water to the developing world, and might even save lives in disaster relief situations.
Project #16: Tetrobot
The Tetrobot project was the first project seriously undertaken by Public Invention, and remains its most important. After a great deal of trial and error and some years of work, we produced a system for building tetrahedral robots on a small cheap scale.