The Water Sensor module is part of the Grove system. 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 MΩ. 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.
Features¶
- Grove compatible interface
- Low power consumption
- 2.0cm x 2.0cm Grove module
- High sensitivity
Applications Ideas¶
- Rainfall detecting
- Liquid leakage
- Tank overflow detector
Specifications¶
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 | % |