This DIY air quality monitor will measure:
- temperature
- humidity
- pressure
- CO2
Derivated from Dheera Venkatraman air quality monitor project.
By default, results are uploaded to mqtt broker for serial database and visualisation tool integration.
An STL file for 3D printing a case is in the stl folder. An scad file (OpenSCAD) is in the scad folder.
- Modify
config.py. Enter your Wifi name (SSID) and password. The microcontroller needs WiFi access to be able to upload the sensor data. - Modify
config.py. Enter MQTT broker address and topic.
Plug the microcontroller into your computer using a USB-C cable. It should appear in your file explorer. Copy and replace the files including the files you modified into the CIRCUITPY folder.
Do not include scad and stl directories.
Press reset.
From a terminal window, you can log into the Feather S2 microcontroller to read the logs using
sudo screen /dev/ttyACM0 115200
The actual device name might be different. This opens up a python terminal. You can re-run the code by typing import code.