Crowtail Water Sensor

Description

Crowtail Water Sensor detects water by having some of the exposed traces connected to ground and interlaced between the grounded traces are the sensor traces. The sensor traces have a weak pull-up resistor of 1MΩ. The resistor will pull the sensor trace value high until a drop of water shorts the sensor trace to the grounded trace. With Crowduino's digital I/O pins, you can detect the amount of water induced contact between the grounded and sensor traces.

The Crowtail water sensor comes with a Crowtail 3 pin cable.
– Connect: D Digital
- PTM Wiki