Here is the third and final batch of files making this technology open source: http://coolindia.net/auroraopensource.zip
Please note that this is a large ZIP file - 22 MB and may take a while to download.
A separate archive with detailed layer drawings of the construction can be downloaded here: http://coolindia.net/aurorafabrication.zip - this is also large (133 MB).
Please see the notes below too.
Included are the following (and more):
PCB design and parts list
Code and functional specifications
Example artwork for how the system could be integrated into a jacket
The core technology used in this project can do cooling or warming. The “Aurora” prototype was made as primarily as a warming product. To make a cooling version, the heat exchangers need to be replaced with thermoelectric modules, heat sinks and fans. For the specific parts needed for this, refer to the cooling section of the Aurora Parts List in the ZIP file. You can learn more about thermoelectric modules in my tutorials starting here: https://www.collaborizm.com/thread/HJCnO6p_Z
Aurora was meant to be a jacket or hooded sweatshirt form factor, but you can use whatever base product makes sense. 3) The Aurora Cut Files folder contains an example SVG file for cutting textiles using a laser cutter.
They can also be printed and used as templates for manual cutting with scissors. These files assume that the electronics and enclosure are in a jacket pocket. The Aurora Mens Base Layer Heating file can be used to make cute files too.
As referenced below, the engineers on the project had issues with getting the 5 Volt power supply to work. This will need to be fixed in the next version. Message me if you need details about what needs to be changed, and for a workaround.
For more information about how the system works, see the patent files, which are public domain in India – http://coolindia.net/eemhtcopensource.zip
This is the best set of files I have at this point. It should be complete and accurate. If anything is missing, or if you need more information on any of this, just let me know.
Eagle Files Notes
- Schematic is proper, but board file needs partial redesign to fix power issue
- All the components that are used by the 5V regulator should be located near it (Texas Instruments has a good example schematic for this chip)
- This change will cause redesign for the traces going to the micro controller; it will not change the function, just the way the traces are run to it
STEP Files Notes
- Bottom Case and Top Case is ABS Plastic
- Everything else (seals) is rubber (i.e. TPU which is Ninja Flex we used)
The work provided in the ZIP archive is provided for use in India under a Creative Commons Attribution-ShareAlike 4.0 International license. In other countries, non-commercial use is allowed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license.
This work is intended to conform to the Open Source Hardware (OSHW) Statement of Principles 1.0 and Open Source Hardware (OSHW) Definition 1.0 (https://www.oshwa.org/definition/). Contact me if there is anything from the OSHW that I didn’t follow when making the archive and I will add the necessary files.
Let me know what you think!
To learn more about the Cool India project, visit http://coolindia.net