I’d like to announce an initiative in the Berlin TTN community to help operators of public spaces in properly ventilating them, and to inform their patrons about the air quality.
The non-profit initiative called Clair Berlin (as in CLean AIR), you can find detailed information on our website (sorry, currently in German only). We are launching our test operations today, and would like to scale throughout the city of Berlin if funding permits.
We welcome contributions to the code base, as well as other regions around the world starting to set up their own platforms. Currently, we are four individuals doing the development and management work in our spare time and out of our own pockets; therefore, we also welcome financial backing to help the initiative scale.
- We use the Berlin TTN for sensor data communication to the Clair Platform
- The Clair Platform is a custom software stack orchestrated via docker swarm. The entire stack, including our infrastructure as code, is available on GitHub as open source.
- We use commercially available LoRaWAN CO2 sensor nodes during the initial test operations. In particular, the [Elsys ERS CO2 LIte](https://www.elsys.se/en/ers-co2-lite/]. However, the platform is architected such that it can connect other sensor models as well with minor modifications.
- We also developed a DIY CO2 sensor on the basis of the Sensirion SCD30 sensor module and an Adafruit Feather M0 LoRa Board. Our prototype Arduino Software plus information on how to build your own CO2 sensor is available in a separate repository, and we added an instructions page on the Clair Berlin website.
We hope to provide a valuable service to the TTN community and are happy to receive comments and feedback!