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 ...

The hardware is consists of an Arduino microcontroller (here an Arduino Uno R3) and a pre-wired soil moisture sensor module. The soil moisture sensor module , built around the LM393 comparator, gives ...

The system here monitors temperature, humidity, and smoke levels and alerts you if those levels reach a certain point.

To help monitor that environment he built this sensor array which displays temperature and soil moisture readings. Temperature is quite simple.

I'm planning to have a "spider" of moisture sensors off one Arduino - 5 or 6 coming off one box. Again, I doubt you need continuous monitoring even with multiple sensors.

A competent Arduino implementation (SparkFun RedBoard) can get down to around 5mA from USB (if you remove the power LED) in deep sleep mode. The cheap Chinese ones do draw a lot more (20mA in deep ...

Monnit launches its new ALTA® Soil Moisture Sensor to alert you on your mobile device or computer how much, when, and where to water your crops.