Posted in Arduino Hacks, Misc Hacks Tagged air quality, Air quality sensors, arduino, dust meter, dust sensor, emissions ← Federico Musto Of Arduino SRL Shows Off New ARM-based Arduino Boards ...

Don Howdeshell, of Don's Projects, details the entire setup, from start to finish, on his blog. He even provides the wiring diagram for his controller and the config file for his lights.

Using a small sensor, an Arduino Pro Mini, a relay, transformer, and an outlet box, he created a system that can detect the amount of water in the tree's tray and blink a morse code message when ...