[Andrew Lamchenko], who has built a number of small e-ink-based sensors this year, released another design called the eON Indoor Air Quality Sensor. As his previous sensor designs, the eON boasts ...

Just tack a few sensors and some LEDs on them ... off-the-shelf modular components to create an Internet-connected air quality monitoring station. But he’s not just building one or two of ...

Paku combines Apple’s MapKit framework with public data from PurpleAir to track air quality globally ... but I love Paku’s clean, focused design and the fact that I can set its widgets to a sensor ...