There's some good empirical data about the cheap PM2.5 sensors that Adafruit sells on their forum. The sensor itself has a microcontroller that filters the raw

There's some good empirical data about the cheap PM2.5 sensors that Adafruit sells on their forum. The sensor itself has a microcontroller that filters the raw values and you need to keep this in mind when interpreting the data. https://forums.adafruit.com/viewtopic.php?f=48&t=136528&p=767725#p767725 https://forums.adafruit.com/viewtopic.php?f=48&t=136528&p=76...