The soil moisture sensor module , built around the LM393 comparator ... to one analog input (A0) of the Arduino. Here is the test code that indicates the soil wet/dry conditions using just two LEDs ...

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 ...

I borrowed most of the Arduino's programming code from Iseman's project and ... (according to a comparison with a commercial soil-moisture sensor), and 661 in a drier pot. This gave me a good ...

You’ll use an HL-69 moisture sensor, readily available online for a ... Check that your setup matches that below, and then upload the code in “The Sketch” (see below). 6. Connect the Arduino to your ...

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 ...