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Grove Soil Moisture Sensor

SeeedGrove Soil Moisture Sensor

MPN: 101020008
Seeed Technology Co., Ltd
Moisture Sensor Grove Platform Evaluation Expansion Board
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Overview

The Grove Soil Moisture Sensor is an analog resistivity-based probe designed to measure the water content in soil for environmental monitoring. It operates on a voltage range of 3.3V to 5V and outputs an analog signal between 0 and 950 relative units, where higher values indicate higher moisture levels. The board features a gold-plated sensor surface to improve conductivity and resist corrosion during short-term deployments.

Why Choose This Part

The sensor utilizes the standardized Grove connector system, enabling solderless plug-and-play integration with Arduino and Raspberry Pi base shields. Its low current consumption of 35uA makes it suitable for battery-powered IoT nodes that require periodic moisture polling.

Applications

Smart Irrigation Systems
Automated plant watering by triggering pumps or solenoid valves when soil moisture drops below a calibrated threshold.
Indoor Gardening
Integration into smart pots or home automation systems to provide visual alerts or notifications when a houseplant needs water.
Environmental Research
Rapid prototyping of data logging stations to monitor moisture trends in greenhouse soil or outdoor garden beds.

Key Specifications

Type Sensor
Contents Board(s), Cable(s)
Function Moisture
Platform Grove

Getting Started

To use this sensor, connect it to an analog input port on a Grove Base Shield or Seeeduino board. Use the standard Arduino analogRead() function to obtain values; typical readings range from 0 in dry air up to approximately 950 when fully submerged in water. For Raspberry Pi applications, an ADC such as the GrovePi+ or a dedicated ADC module is required to interpret the analog output.

Also Consider

Grove Capacitive Soil Moisture Sensor SeeedSeeed Technology Co., Ltd - Uses capacitive sensing instead of resistive, which avoids probe corrosion over long-term soil exposure.
Capacitive Soil Moisture Sensor v1.2 DFRobot - A widely used capacitive alternative that offers improved durability against mineral buildup compared to resistive probes.