PM Sensor SDS011 High Precision PM2.5 Air Quality Detection Sensor Module Super Dust Sensors Digital Output Compatible with Arduino

Super easy to setup, easy to code for, and works perfectly with a Raspberry Pi.I highly recommend following the guide named "Monitor air quality with a Raspberry Pi". Allows you to setup a live data stream to Adafruit IO with a few lines of Python.

Works as advertised. Easy to set up, correlates well with local outside pure air reports and with indoor cooking activity, so now I know my indoor air is particulate free. We’ll see what happens when we get wildfire smoke here like last year (hope never!)

Can't definitively say it's great yet because I just got it working after a struggle. The extra circuit board and cable is a serial (native to the sensor board) to USB adapter supplied by a different manufacturer. If it doesn't work straight out of the bag, try installing a CH340 USB driver. If you look at the chip on the adapter board, it is a CH340 chip. This worked for me. Note that the serial stream is binary, so you'll need to program something to read and interpret the stream. Can't just use 'putty' to read values directly.

Will test against a similar offering from Adafruit, but seems to work! Works best if you have some familiarity with serial port interfaces through any platform (Python, MATLAB, whatever).

My initial review was pretty bad. However, more libraries have become available. This air particulate sensor has shown, in various studies, to be adequate for reasonable air monitoring accuracy and precision and, it has performed as well or better than other options, especially for the price.

Super easy setup via USB and PC software download - Google for this. It seems very sensitive in that I crumpled a tissue about 3 feet away from sensor and it picked up! I have commercial air filters and it seemed to match readings. I have read that it can become less sensitive in dusty environments but you can open up and clean out.