Use this simple sensor to detect the amount of moisture in soil. Works great with Arduino and has adjustable digital on/off threshold output as well as raw analog.
Output is stablized by a capacitor and LM393 comparator circuit.
|Current Consumption||~15 mA|
|Dimensions||9.0 x 3.0 x 0.5 cm|
|Output||2 - Analog (inverted, HIGH = DRY) and Digital (Adjustable Threshold)|
|Vcc||up to 5.0V|