electronic conference badge for 2018 Open Hardware Summit attendees
sheet - 49.23 kB - 08/04/2018 at 04:51
Adobe Portable Document Format - 61.81 kB - 08/03/2018 at 08:29
Adobe Portable Document Format - 149.77 kB - 08/03/2018 at 07:59
Adobe Portable Document Format - 137.43 kB - 08/03/2018 at 07:59
The official firmware will be MicroPython-based. However, I wanted to document an Arduino sketch and libraries that can be with the e-paper display on the bage.
The GitHub repo is here:
Methods to connect the wires:
All 300 badges assembled by Screaming Circuits have arrived!
Photo gallery: https://photos.app.goo.gl/Ficbod1XqiMPB1P66
Thanks to Duane Benson and the rest of the team at Screaming Circuits for all the support on this project.
Thanks to @Zapp @Hyr0n and the ANDnXOR badge team for the suggestion of custom printed dye sublimation from CustomLanyards4All. We selected the doubled ended lanyard with plastic j-hook upgrade to avoid the metal hook from shorting out any connections:
We ordered quantity 330 lanyards to have some extra in case of any issues. The planned number of badges is 300.
The shipment just arrived today!
Here is what the final PCB looks like (rev 4):
OSH Park shared project:
KiCad design files and gerbers on GitHub:
OSH Park shared project for the Rev 3 by @Alex Camilo :
We expect this to be the final revision.
It is ordered on Super Swift today and should be validated next weekend. This will allow us to order the full quantity PCB panels in August 13th. Assembly is estimated to be 10 business days from the day when all components and PCBs are received.
Rev 2 photos:
And for those interested, here is a link to a gallery:
Terminal output on Rev 2 prototypes:
The Rev 2 prototypes have NodeMCU boards soldered on to the back to serve as a USB to serial adapter.
One of the Rev 2 prototype boards that Alex sent me has the default e-paper demo:
The other has MicroPython installed! :)
Open Hardware Summit 2018 badge has now officially been certified as open source hardware by the Open Source Hardware Association.
UID is: US000133
Also, @Alex Camilo created a this GitHub repo to act as the OHS18 Badge Documentation website: Page
quick update for those that have not been following along with this project's chatroom.
@Alex Camilo has been doing FANTASTIC leading the design of the OHS18 badge!
Photo of Rev 2 prototype:
And here is render of preview of our Rev 3 prototype:
I got this suggestion from AND!XOR for custom lanyards:
They recommended doing
Any thoughts about width?
I think I'd like either 1" or 3/4".
1) I want to have assembly done by Sept. 1st
2) I met people from Rigado and they gave me a dev board. This is the module used in the Portland Bsides Oregon Trail badge and previous And!XOR bender badge. It is a module board for Nordic Bluetooth SoC. I am waiting on a quote from them for qty 300.
3) BLE on ESP32 is not low power, yet, and has same power draw as WiFi
4) I hung out with And!XOR this past weekend and saw the new Bender badge. They are using ESP32. They prefer the development environment as compared to Nordic (for the Rigado module). The BLE stack is much more basic than Nordic but they also have the option to leverage WiFi. They are using 2xAA with a Skyworks boost converter
5) Please @ mention @oshpark in this project's hack chat to make sure I'll see it.
Nemesis raised an interesting question in this post about OHS 2018 on the OSHWA Forum:
I checked the badge's reference project on Github. I attached an image below for people to get an idea of what the reference looks like. Will the enclosure for the badge be 3D printed as well?
From the ESP trINKet repo:
Here are my (Drew Fustini) thoughts:
I would appreciate any feedback in the comments here.