The “Internet of Dirt” is a quick little Arduino project that monitors the relative humidity of your soil and texts you when your plant needs watering. It combines a corrosion-resistant capacitive soil sensor, a WiFi-enabled Adafruit Feather HUZZAH ESP8266 board, Adafruit IO, and IFTTT.
Maya Kutz and I co-designed this project for a class we ran at NYC Resistor. You can view the tutorial on Instructables.
