If you are designing your own intelligent “Graden Computer” with an optional digital plant moisture sensor/water pump controller ... to one analog input (A0) of the Arduino. Here is the test code that ...

This is a simple arduino project for a soil moisture sensor that will light up a LED at a certain moisture level. It uses Arduino Duemilanove microcontroller board. Two wires placed in the soil pot ...

So, Instructables user dr.mcc built a moisture sensor that alerts you when you need to water a plant by using an emoticon. Using an Arduino, a moisture sensor, an LED matrix, and a few other parts ...