DIY Air Quality Sensor

from blog Ben Congdon, | ↗ original
It’s shaping up to be another intense season for wildfires on the West Coast. Last year, we had about 2 weeks where the air quality was bad enough that we needed to limit our time outdoors. It’s been on my mind to stock up with supplies for wildfire season. Air filters (for reducing the amount of smoke indoors) are now plentiful, but inexpensive...