How to build an air purifier in 6 simple steps

T1Covered by 1 source · first reported by Raspberry Pi / Arduino / Adafruit at 02 Nov, 22:32 UTC

John Alexander built a DIY air purifier for Popular Science and wrote up how it went. The design is a Corsi-Rosenthal box, or CR box: four square furnace filters taped into a cube, a cardboard bottom cut from the fan’s shipping box, and a box fan on top. The fan pulls air in through the […]