You should buy a PurpleAir air quality monitor

Check this out: In July of 2018 I paid $244 to a company called Adrionics for a chunk of PVC stuffed with electronics, the PA-II: It’s a sophisticated, lab-grade piece of hardware – twin laser-based light scattering particulate sensors, and it measures how much junk is in your air. In particular (a pun I am […]

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The world in ultraviolet

After watching this very cool video I went shopping for a UV camera. They are super rare, much harder to find than the infrared camera I got some time ago. I found the Sunscreenr for $80: There seem to be, at present, none that are iOS compatible, so this was the best option that I could find. It’s took […]

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