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Open Hardware Summit 2018 @ MIT September 27th

caleb
Apr 16, 2018

This is the place for Summit related questions, coordinating meetups, and everything else OHS 2018 related!

drewfustini
May 7, 2018

FYI - OSH Park will be producing electronic conference badges for the 2018 Open Hardware Summit.

I have created a project on hackaday.io and would appreciate any feedback from the community on the current concept:

The current concept is based on the ESP trINKet by Mike Rankin:

Features for the OHS18 badge:

  • ESP32 microcontroller with built-in WiFi and BLE
  • E-Paper to display the badge wearer’s name
  • Use Bluetooth Low Energy (BLE) to allow badge wearer to update the displayed text from an Android or iOS phone
  • Powered by 2x AAA batteries

Budget: $25 per badge
(that will have to include components, batteries, PCB, assembly, lanyard, packaging)

Production plan:
The goal is to produce quantity 300 by September 1st. The badge circuit boards will be pick-n-place assembled by a professional assembly service. A test jig will need to be created for the assembler to test the badges.

Hardware tasks:

  • reproduce the ESP trINKet design in KiCad (Mike Rankin’s design was done in Altium)
  • modify the ESP trINKet design to use 3x AAA for power instead of LiPo

Design tasks:

  • create an atheistic design for the badge including artwork and shape

Software/Firmware tasks:

  • proof of concept demo on ESP32 using BLE to set the text on the e-paper display

Production/Supply Chain tasks:

  • decide on which e-paper display to use (current choice is Waveshare 2.13" display)
  • create a plan for provisioning the badges and how the badge wearer will connect to their badge over BLE
  • talk with assembly company to figure out best way to assembly badge with epaper display (use connector or directly solder the ribbon cable)

Thanks!
Drew
drew@oshpark.com

caleb
May 7, 2018

This sounds awesome Drew!! I don’t have any feedback yet but I’ll read into it more! We are working on getting a place to have all the OSHWA materials sent to in Boston this week, I’ll update once we get the address.

Best,

Caleb

drewfustini
May 29, 2018

Hi, thanks for posting. I had not planned on having an enclosure but I would be open to the idea.

I want the final board design to have an interesting shape (board outline). I am not very good at mechanical design so I had not considered designing an enclosure. However, it would be awesome if someone was interested in designing one.

First I think we need to figure out the aesthetic for the PCB, both in terms of outline and artwork (silk and/or copper).

The manufacture of 300 enclosure would also have to be figured out. and if laser cutting or 3d printing is the best approach.

Alternatively, I suppose it would be cool if we had the enclosure design in the GitHub repo for people to fabricate themselves if they wanted.

thanks!
drew

nemesis_c
Jun 24, 2018

awesome will continue the chat for the badge there!
In case anybody want to follow here is the link for the thread on the badge I will link to it at the end of this post.
So far the badge will have:

  • ESP32 microcontroller with built-in WiFi and BLE
  • E-Paper to display the badge wearer’s name
  • Use Bluetooth Low Energy (BLE) to allow badge wearer to update the displayed text from an Android or iOS phone
  • Powered by 2x AAA batteries

Budget: $25 per badge
(that will have to include components, batteries, PCB, assembly, lanyard, packaging)

Production plan:
The goal is to produce quantity 300 by September 1st. The badge circuit boards will be pick-n-place assembled by a professional assembly service. A test jig will need to be created.

OHS Badge Discussion Thread

drewfustini
Aug 6, 2018

Update on the OHS18 badge project log:
Rev 3 ordered, and photos of Rev 2

Preview of Rev 3:

a
a.png2128x1324 111 KB

Resources for the 2018 Open Hardware Summit badge:

GitHub repo for hardware design

Hackaday project chat room:

Hackaday project page:

Rev 3 shared project on OSH Park
https://oshpark.com/shared_projects/8yeLK5gd