SKU: SENS-0436
📋 GST Invoice Available

Seeed Studio Studio Grove Moisture Sensor v1.4 - Soil Resistivity Measurement Module

₹419.00 (Inclusive of all taxes)
Out of Stock

The Seeed Studio Studio Grove Moisture Sensor v1.4 is a soil resistivity measurement module compatible with 3.3V/5V logic systems like Arduino, Raspberry Pi, and ESP32 via its Grove interface, providing analog output for precise soil moisture level detection in gardening and agricultural applications.

Features

  • Measures soil moisture via electrical resistivity between two exposed probes.
  • Standard Grove 4-pin interface for easy plug-and-play connection to Seeed Studio Studio base shields.
  • Wide 3.3V to 5V DC operating voltage range compatible with most microcontrollers.
  • Compact 60mm x 24mm PCB footprint with pre-drilled mounting holes for secure installation.
  • Provides analog output signal proportional to soil moisture content for simple ADC reading.

Out of stock

Description

The Grove Moisture Sensor operates on the principle of soil resistivity measurement. It features two exposed conductive probes that act as a variable resistor; as soil moisture increases, conductivity rises and resistance decreases. This change in resistance is converted into a variable voltage signal available at the analog output pin.

Designed primarily for prototyping and hobbyist applications, the module outputs a raw analog signal that requires an ADC (Analog-to-Digital Converter) on a host microcontroller for interpretation. It is not sealed or hardened for prolonged, direct soil exposure, and the probes are susceptible to electrolytic corrosion over time, limiting its use to controlled or short-term monitoring scenarios.

Key Features

  • Soil moisture detection via direct resistivity measurement between two conductive probes.
  • Grove standardized 4-pin connector (VCC, GND, NC, SIG) ensures quick, foolproof system integration.
  • Low operating current of up to 35 mA minimizes power draw in battery-operated monitoring stations.
  • Compact and lightweight PCB design allows for flexible placement in pots or small garden beds.
  • Optimized performance-to-cost ratio for educational projects and proof-of-concept prototypes.
  • Clear analog output simplifies coding for beginners on platforms like Arduino IDE.

Applications

  • Prototyping automated plant watering systems for indoor herb gardens or small-scale horticulture.
  • Educational demonstrations of soil science and basic sensor principles in STEM classrooms.
  • Monitoring soil moisture levels in potted plants or raised garden beds for hobbyist gardeners.
  • Integrating into IoT-based environmental monitoring nodes for smart agriculture research projects.

Technical Specifications

Model / NameGrove Moisture Sensor v1.4
Operating Voltage3.3 VDC to 5 VDC
Operating Current0 to 35 mA
Output SignalAnalog (0-VCC)
InterfaceGrove 4-pin (VCC, GND, NC, SIG)
PCB Dimensions (L x W)60 mm x 24 mm
Mounting Hole Diameter2 mm
Weight4 g
Sensing PrincipleSoil Resistivity Measurement

Frequently Asked Questions

What is the operating voltage range for this Grove Moisture Sensor?

The sensor operates from 3.3V to 5V DC, making it directly compatible with common development boards like Arduino (5V logic) and Raspberry Pi or ESP32 (3.3V logic). You must connect it to a matching VCC source on your Grove base shield or microcontroller.

How do I connect and read data from this sensor?

Connect the module's 4-pin Grove connector to an analog-capable Grove port on a compatible base shield (e.g., Seeed Studio Studio's Grove Base Shield for Arduino). The SIG pin provides an analog voltage output. Read this pin using your microcontroller's ADC (Analog-to-Digital Converter) and map the value to a moisture level through calibration.

Is this sensor suitable for long-term, permanent installation in soil?

No, this sensor is designed for prototyping and short-term use only. The exposed probe electrodes are prone to electrolytic corrosion and degradation when left in moist soil for extended periods. It is not waterproofed or hardened for continuous industrial or agricultural deployment.

Package Includes

  • 1 x Seeed Studio Studio Grove Moisture Sensor Module

Additional Information

Weight 0.004 kg
Dimensions 6 × 2.4 cm