Arduino + Nova pm sensor

Check the air quality while you are 3d printing, soldering, using a spray can etc.

Although the box is small in size, all parts are fitting in easily.

The display works in 3 modes:
real time PM2,5 and PM10 display.
MIN-MAX PM2,5 and PM10 display.
Silent dark mode (alarms and display can be silenced).

Audible alarm on exceeding the WHO recommended max levels.
Multi color led signals visible alarm on exceeding the WHO recommended max levels.

This is a cheap and useful project that can help to keep you sound.