Particulate matter sensors measure the amount of very small particles in the air. A short introduction how these sensors work can be found on Open Home Automation.
Cheap LED based sensors usually use a GPIO interface that is hard to attach to computers. However, there are a lot of laser LED based sensors on the market that use a serial interface and can be connected to your Home Assistant system easily with an USB to serial converter.
At this time, the following sensors are supported:
To use your PM sensor in your installation, add the following to your
sensor: - platform: serial_pm serial_device: /dev/tty.SLAB_USBtoUART name: Nova brand: novafitness,sds011
serial_device (Required): The serial port to use. On *nix systems, it can often be identified by
$ ls /dev/tty*
- name (Optional): The name displayed in the frontend.
- brand (Required): Manufacturer and type of the sensor.