The microcontroller first initiate the LoRaWAN module and join the network. When doing so, the backend server is notified and schedule a downlink message containing the current real world time. A few ...

This is a MH-Z19B CO2 sensor library for Arduino. It has been built from scratch to support hardware and software serial with a small footprint. The MH-Z19B is a NDIR (Non-Dispersive Infrared) type ...

In this project my aim is to develope CO2 level supevisory tool with STM32WB, SPG40 CO2 sensor and widespread Tuya smarthome framework and smartphone app. Tuya compatible zigbee gateways are made by ...

The [Pelling Lab] have been iterating over their DIY CO2 incubator for a while now, and it looks like there’s a new version in the works. We’ve covered open source Biolab equipment before including ...