Herald Hardware
Permissively licensed opensource hardware designs for Herald powered wearables and beacons. Supports digital contact tracing and other eHealth approaches.
What is in this repository?
This repository aims to provide opensource hardware designs that can be used either as-is or with modification by any Public Health Authority (PHA), NGO working on disease outbreaks, or commercial company.
Several envisaged uses for these hardware designs are possible. The initial design targets include:-
- Digital Contact Tracing dedicated wearable
- Bluetooth venue beacon hardware as an alternative to manual check-in QR codes for bars, restaurants, etc.
- Digital Contact Tracing exposure tokens upload/download gateway links for remote communities
- Health monitoring wearable
We aim to provide a range of design files in this repository, including:-
- Hardware design overview descriptions
- Datasheets for designs
- Electronics schematics
- PCB layouts
- BOM files for designs
Our Main website will contain documentation including quick start guides and application development guides.
Software and sample applications to run on this hardware can be found on the main Herald Proximity project website.
What hardware are your designs based on?
Our main hardware platform are Nordic Semiconductor's nRF52 and 53 series SoCs. In particular the nRF52833 provides a good balance between memory availability and processing power.
We also use Nordic Semiconductor's nRF Connect SDK (NCS), which is based on the Zephyr RTOS, as our target Operating System.
Herald's C++ API and samples are first tested on nRF52832DK, nRF52833DK, nRF52840DK and nRF5340DK, and then tested on the hardware designs in this repository.
Are any custom drivers needed?
We have created some custom Zephyr drivers based on our own sensor needs. We will be contributing these to upstream Zephyr as PRs. This process may take some time. If you cannot compile our demo apps for your device then please visit the Zephyr Devices repository from The Herald Project at the below URL:
https://github.com/theheraldproject/zephyr-devices
License and Copyright
This repository is licensed under CERN-OHL-P v2.
More information on this license can be found in LICENSE.txt or at https://ohwr.org/project/cernohl/wikis/Documents/CERN-OHL-version-2
All files in the external/ subdirectory are covered by distribution terms of their respectable owners.
All works are copyright 2021 Herald Project Contributors. See the NOTICE.txt file for details.