Capacitive Soil Moisture Sensor V2.0 Module For Arduino/ Raspberry Pi

Capacitive Soil Moisture Sensor V2.0

Product Description

The Capacitive Soil Moisture Sensor V2.0 is a durable and reliable sensor designed to measure soil moisture levels using capacitive sensing technology. Unlike traditional resistive soil moisture sensors, it does not rely on exposed conductive electrodes, helping provide improved corrosion resistance and longer service life in soil-monitoring applications.

The sensor provides a simple analog voltage output that can be read directly by a compatible analog input or ADC. This makes it easy to monitor changes in soil moisture and use the readings for plant care, smart irrigation, agriculture automation, and IoT projects.

With an operating voltage of 3.3V to 5V DC and a working temperature range of -10°C to +60°C, the sensor is suitable for use with popular development platforms such as Arduino, ESP32, Raspberry Pi with a suitable ADC, and other microcontrollers.

Features

• Capacitive soil moisture sensing technology
• V2.0 sensor design
• Analog voltage output
• Better corrosion resistance than resistive sensors
• Corrosion-resistant PCB coating
• Operates from 3.3V to 5V DC
• Simple 3-pin interface
• Easy to insert into soil
• Suitable for long-term moisture monitoring
• Compatible with popular microcontroller platforms
• Suitable for smart irrigation and agriculture automation

Specifications

Parameter	Specification
Sensor Type	Capacitive Soil Moisture Sensor
Model	V2.0
Output Type	Analog Voltage
Operating Voltage	3.3V – 5V DC
Interface	VCC, GND, Analog Output
Detection Method	Capacitive Soil Moisture Detection
Material	Corrosion-Resistant PCB Coating
Working Temperature	-10°C to +60°C
Application	Soil Moisture Monitoring, Smart Irrigation, Agriculture Automation
Compatible Boards	Arduino, ESP32, Raspberry Pi, Microcontrollers

Pin Configuration

Pin	Function
VCC	3.3V – 5V DC Power Input
GND	Ground
Analog Output	Soil Moisture Analog Signal

Design and Construction

The Capacitive Soil Moisture Sensor V2.0 features a compact sensing board with a corrosion-resistant PCB coating for improved durability in soil environments. Its capacitive sensing structure allows moisture to be detected without depending on exposed metal electrodes.

The simple three-pin interface makes the sensor easy to connect to development boards and microcontrollers. Its compact construction allows it to be inserted into soil near plant roots for convenient moisture monitoring.

Working Principle

The sensor works by detecting changes in the capacitance of the soil as its moisture content changes. Water in the soil affects the dielectric properties surrounding the sensing area, causing a corresponding change in capacitance.

The sensor converts this change into an analog voltage output. A connected microcontroller or ADC can read this signal and use the measured value to determine relative soil moisture conditions.

The analog readings can be calibrated according to the soil type and application to establish suitable dry, moist, and wet ranges.

Applications

• Soil moisture monitoring
• Smart irrigation systems
• Automatic plant watering
• Smart gardening
• Agriculture automation
• Smart farming
• Greenhouse monitoring
• Plant care systems
• Arduino projects
• ESP32 projects
• IoT agriculture
• Soil data logging
• DIY electronics
• Educational projects

How to Use

1. Connect VCC to a suitable 3.3V or 5V supply.
2. Connect GND to the common ground.
3. Connect the Analog Output to a suitable analog input or ADC.
4. Insert the sensing portion into the soil near the plant.
5. Read the analog value using the microcontroller.
6. Calibrate the readings according to the soil conditions and application requirements.

Compatible Platforms

• Arduino Uno, Nano, Mega and compatible boards
• ESP32
• ESP8266
• STM32
• Raspberry Pi with a suitable ADC
• Other 3.3V/5V microcontrollers with analog input

Package Includes

• 1 × Capacitive Soil Moisture Sensor V2.0

Product Disclaimer

The sensor provides an analog indication of soil moisture and may require calibration because readings can vary depending on soil composition, temperature, sensor depth, and environmental conditions.

The sensor is intended for soil moisture monitoring and does not directly operate a water pump. An appropriate relay, MOSFET, or motor driver is required for automatic irrigation applications.

Product images are for representation only. The actual product may differ slightly in appearance, colour, dimensions, PCB markings, or component placement depending on the manufacturing batch.