soil moisture sensor
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ATK-SM
Soil Moisture
Overview
The Soil Moisture Sensor Module reads the amount of moisture present in the
soil surrounding it. Ideal for monitoring a garden, or your pet plant's water
level. This is a must have tool for a robotic gardener. This sensor uses the two
probes to pass current through the soil then reads the resistance to determine the
moisture level. Since water conducts electricity, the higher the water content,
the easier it for the electrons to move. Similarly since rocks and dirt do not
conduct electricity, the driver the soil the more resistance the electrons face.
The varying resistance is translated to an analog output.
Features
Operating Voltage: 3.3V to 5V
Output voltage0 to 4.2V.
Current 35mA.
Analog output.
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Applications
Consumer electronics
Garden Automation
Green House Automation.
Water pump Controller
Specifications
Parameter Min Typ Max Units
Working Voltage 4.5 5 8 Volts
Range 0-4.2 Volts
Pin Diagram
Pin Pin Name
Pin Name
+5V I/P Regulated 5V supply input
GND GND Ground level of power supply
OUT O/P Output for external devices