I made & coded my own array of various sensors and have a blower/laser pm2.5 sensor, and I care not about its scientific accuracy, but I care about its ability to be able to tell me when air quality on my deck gets worse. It does that immediately with an LED that shines into my window with various colors depending on EPA air quality math. It could be huge percentages off scientifically accurate, but its going to tell me that the air quality got much worse. Its pm2.5 numbers are close to other stations around me regardless, but it definitely isn't a scientific instrument.
I'm not sure if most people buying these things care about its scientific accuracy, mainly just if things are getting worse outside.
-peas- t1_jcgv5ro wrote
Reply to comment by Tactically_Fat in Open-source tool from MIT’s Senseable City Lab lets people check air quality, cheaply. by chrisdh79
I made & coded my own array of various sensors and have a blower/laser pm2.5 sensor, and I care not about its scientific accuracy, but I care about its ability to be able to tell me when air quality on my deck gets worse. It does that immediately with an LED that shines into my window with various colors depending on EPA air quality math. It could be huge percentages off scientifically accurate, but its going to tell me that the air quality got much worse. Its pm2.5 numbers are close to other stations around me regardless, but it definitely isn't a scientific instrument.
I'm not sure if most people buying these things care about its scientific accuracy, mainly just if things are getting worse outside.