Kiwi air monitor is an open source CO2/Humidity/Temperature sensor intended for monitoring the indoor air quality. Kiwi air monitor was initiated by swat.engineering to support teachers and school organizations with the ventilation of the class rooms.
Due to the cost-cutting concern, we have focussed more on precision instead of accuracy. Meaning that if a value increases, it should indeed represent an increase in that property, but it is acceptable to have a bias with respect to more expensive measurements. So you might get a temperature of 20.4 degrees C even though it iss actually 20.9 degrees C but if it increases to 20.5 degrees C it indeed is now 21.0 degrees C.
The hardware is build around the ESP8266 platform. The costs (in the Netherlands) are roughly €45-50 per device. The list of components and schemas can be found in doc/NL/Hardware.md. We also provide a 3D model to print.
Please check out the documentation for further details and instructions about hardware and software, and user manuals:
We've developed a small server setup (docker-compose based) so you can get started yourself. Checkout the server/ directory and the corresponding documentation.
The software and 3D models are all GPLv3 licensed. We use libraries with compatible licenses. See Software documentation for a list of which libraries are used.
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