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 ...

This Arudino project reads Capacitive Soil Moisture Sensors, measures soilMoistureValue vs AirValue vs WaterValue, and then triggers a relay module to switch water pumps on/off when needed. - ...

Built using a soil moisture sensor and an Arduino board, this system sends data to a web page via the browser’s serial API. A dynamic line graph offers real-time updates, with an option to download ...

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 threshold moisture level is user-calibrated depending on the plant type. Bluetooth Module Uses serial communication to transfer data between the Arduino and Smartphone. Software & Bluetooth ...

Always under-watering or over-watering your plants? Wire up this Arduino-based sensor and save them.

For my totally-hypothetical at this point wireless soil moisture sensor project, I've been thinking about using supercapacitors.