Just a little PM2.5 sensor with a face. 

Features:

• PM2.5 sensor
• Face
• Wifi reporting to adafruit.io

Code is available at the github link on this page. Note: you have to have a secrets.py file (check out learn.adafruit.com for details on what this is) that lists a valid wifi network to connect to, otherwise it will constantly reset. I would make a non-wifi version of the code, but I've already gifted my only unit, so I don't have it available for testing.

CAD files available here:

PM2.5 Onshape

Note: this section under construction.