Wisteria is a Nerves-powered e-ink name badge developed for the Goatmire Conference. This repository contains the hardware design files, schematics, and PCB layouts for the Wisteria board.
The companion software that runs on the badge can be found here
- 4.2" e-ink display
- Allwinner T113-S4 processor
- Approximately 8 hour battery life
- USB-C charging
If you already have a Wisteria board from Goatmire 2025, go to the software repository for instructions on building firmware, flashing the chip and customizing your device.
If you do not have a board, visit the releases section of this repository to download the hardware files. Although the files are exported in the required template format for JLCPCB assembly, they can be manufactured and assembled through the PCB fabrication service of your choice. Note that some parts, including the e-ink display, batteries, and Wi-Fi module, are custom-ordered components and may be difficult to obtain in small quantities.
To modify the hardware, clone this repository and open the project in KiCad 9 or later.
Mechanical files are provided in the mechanical/ directory. These include STEP
models for designing and printing custom cases.
USB-C power and data is not supported when connecting a USB Power Delivery (PD) adapter or power source while the board is powered on. To mitigate this, restart the name badge by moving the power switch "OFF" then "ON" after plugging in a USB-C cable. The reason for this is currently unknown.
Copyright 2025 by Protolux Electronics SARL-S
Wisteria hardware designs are released under the CERN-OHL-S license. See the
LICENSE file for full legal text. Generally, this means:
You are permitted to:
- Use, study, and modify the design files
If you make changes:
- You must release your modified design files under the same CERN-OHL-S license
- You must clearly document the changes you made and identify yourself as the modifier
- You must provide access to the complete source files (schematics, PCB layouts, mechanical, BOMs, etc.) for the version you distribute
Commercial use:
- You are free to produce and sell products derived from this design
- However, if your version differs from the original, you must publish your modified design files
The Nerves name and logo are trademarks of Nerves Project Authors. They are used with permission. See the Nerves Project trademarks policy.
The Protolux Electronics name and logo are trademarks of Protolux Electronics SARL-S.
These marks are not licensed under the CERN-OHL-S license. You may not use the Protolux Electronics logo or trademarks on any modified versions of this hardware, on derivative products, or in any way that suggests endorsement or origin from Protolux Electronics, unless you have received prior written permission.
Special thanks to Lars Wikman for organizing the Goatmire conference and supporting this project, Tigris for providing the funding to manufacture 200 devices for conference attendees, and Frank Hunleth for helping to bring up Nerves on the T113-S4 CPU.
Need help with your next embedded project? We're Protolux Electronics, a Luxembourg-based consultancy which provides hardware and embedded software design services, as well as manufacturing support. We specialize in embedded solutions using Nerves and Elixir. Check us out at https://protolux.io