Description
Grove - Water Sensor can detect the presence of water using exposed PCB traces. It indicates whether the sensor is dry, damp or completely immersed in water by measuring conductivity. The sensor traces have a weak pull-up resistor of 1 M. The resistor will pull the sensor trace value high until a drop of water shorts the sensor trace to the grounded trace. Believe it or not, this circuit will work with the digital I/O pins of your Arduino or you can use it with the analog pins to detect the amount of water induced contact between the grounded and sensor traces.
Application
Rainfall detecting
Liquid leakage
Tank overflow detector
Specification
Item
Min
Typical
Max
Unit
Working Voltage
4.75
5.0
5.25
V
Current
<20
mA
Working Temperature
10
-
30
Working Humidity (without condensation)
10
-
90
%
Dimensions
40mm x20mm x12mm
Part List
Grove - Water Sensor *1
Grove Cable *1