The Capacitive Soil Moisture Sensor Module is a high-quality, corrosion-resistant sensor designed to measure soil moisture levels using capacitive sensing technology. Unlike traditional resistive soil moisture sensors, this module provides more stable and accurate readings while offering a long service life. BDTronics supplies this sensor across Bangladesh, making it ideal for smart irrigation, plant monitoring, and IoT gardening projects.

This module features an onboard voltage regulator supporting a wide operating voltage range from 3.3V to 5.5V, making it compatible with most low-voltage microcontrollers including 3.3V and 5V systems. For Raspberry Pi applications, an ADC converter is required to read analog values. BDTronics ensures reliable and authentic capacitive soil moisture sensors for professional and educational use.

Features:

• Capacitive soil moisture sensing technology for reliable readings

• Corrosion-resistant probe for long-term use in soil

• Onboard voltage regulator for wide voltage compatibility (3.3 – 5.5V)

• Low operating current: 5mA for energy-efficient operation

• Analog output voltage range: 0 – 3.0V

• 3-pin PH2.54 interface for easy connection

• Lightweight and compact module design

• Compatible with Gravity I/O expansion shield

• Perfect for automated plant watering systems, IoT projects, and smart gardening

How to Use the Capacitive Soil Moisture Sensor

• Connect the sensor to your microcontroller or expansion board via the 3-pin interface

• Ensure correct connection: VCC to 3.3–5.5V, GND to ground, AO to analog input

• Insert the sensor probe into the soil at the desired depth near plant roots

• Read analog output voltage for real-time soil moisture data

• Adjust irrigation or trigger pumps using the analog readings in your code

• Suitable for continuous monitoring without significant probe degradation

Product Instructions and Development Notes

• Analog output (AO) provides continuous moisture data

• Use ADC converters for Raspberry Pi applications to read analog voltage

• Avoid exposing sensor to extreme mechanical stress

• Lightweight and compact design allows easy installation in pots, soil beds, and hydroponic systems

• Ideal for both DIY and professional smart agriculture applications

• Reliable sensor module supplied by BDTronics for Bangladesh users

Applications:

• Automatic watering systems and smart irrigation

• Home garden and potted plant monitoring

• IoT gardening projects using Arduino, ESP32, ESP8266

• Educational projects on plant science and environmental monitoring

• Hydroponic and greenhouse soil monitoring

• Analog soil moisture measurement and data logging

• Smart agriculture and environmental IoT systems

Specifications:

• Operating Voltage: 3.3 – 5.5 VDC

• Output Voltage: 0 – 3.0 VDC

• Operating Current: 5 mA

• Interface: PH2.54-3P (3-pin Gravity compatible)

• Dimensions (L x W x H): 98 x 23 x 4 mm

• Weight: 15 g

• Shipment Weight: 0.018 kg

• Shipment Dimensions: 12 × 4 × 1 cm

BDTronics provides this capacitive soil moisture sensor as a reliable and accurate solution for plant monitoring and smart irrigation projects in Bangladesh. Choosing BDTronics ensures authentic modules and consistent performance for both hobbyists and professional users.

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