This is a collection of recent research out of the University of Washington about 100% printed WiFi sensors. A few videos have been circulating the internet lately, so I wanted to put together a set of information I was able to find about this research project. All of this research is still very new, but a very interesting concept. If you haven't heard of it already, I recommend watching these videos to get familiar with the concept:

1. https://youtu.be/gU6-o9SIkMQ
2. https://youtu.be/lD3lTtnoSOk

After you are familiar with the concept, I highly recommend:

1. Viewing the PowerPoint presentation file titled: "Printed_Wifi.pps"
2. Reviewing the Research Paper titled: "3D_Printing_Wireless_Connected_Objects.pdf"
   I've included both in this file set.

Additionally, the CAD files provided for this research were in the SCAD file format, so I converted them to STL for easier usage. These files are as follows:

1. bowtie_antenna.stl
2. coded_gears.stl
3. dipole_antenna.stl
4. flowmeter.stl
5. publicDomainGearLib.stl
6. publicDomainGearLibv2.stl
7. rack.stl
8. spring.stl
9. switch_base.stl
10. switch_contact.stl

Also, I've included the original SCAD files as well. Some notes about these parts:

• Note 1: Part 4 - flowmeter.stl - This part will likely require supports when printing.

• Note 2: Part 3 - dipole_antenna.stl and Part 9 - switch_base.stl - These pieces were printed partially with "Electrifi Conductive 3D Printing Filament" on the contact surfaces. See the images and research paper for more info about this process.

• Note 3: To print the ferromagnetic segments of other models, they research team used "ProtoPasta Magnetic Iron PLA." See the research paper for more info about this process.

And while all of this is still not a 100% complete solution, the concepts and technical ideas have been pretty well described here. The models included here should at least let you test building a solution.