We’ve been having bad air in the Bay Area for a few weeks now and it got me wondering how much was seeping into my house and garage. After a little tinkering, I finished a custom, portable PM2.5 and PM10.0 sensor. The initial build used a SDS011, which promptly died after a week. I moved on to the “less” accurate PMS5003 and have been quite happy with the results. Here’s the sensor in action.
