Soil Moisture Sensor Module
₹41.30 incl. GST (₹35.00 + GST)
The Soil Moisture Sensor Module with LM393 is designed to detect soil moisture levels and provide both analog and digital outputs for monitoring and automatic watering systems. It operates from 3.3V to 5V and features adjustable sensitivity, an LM393 comparator, power and digital output indicators, and a fixed mounting hole for easy installation. With its compact PCB and 21 cm cable, it is ideal for Arduino projects, smart gardening, automatic irrigation, agriculture, and plant monitoring applications.
Soil Moisture Sensor Module with LM393 – Analog and Digital Output
Product Description
The Soil Moisture Sensor Module with LM393 is a simple and practical sensor designed to detect the moisture level of soil for plant monitoring, automatic watering, smart gardening, and irrigation projects. It provides both analog and digital output signals, allowing the sensor to be used for either continuous moisture measurement or simple dry/wet detection.
When the soil becomes dry, the sensor detects the change in moisture and the digital output changes according to the threshold configured on the module. The onboard adjustable potentiometer allows users to set the desired sensitivity level for digital detection.
The module operates from 3.3V to 5V DC, making it compatible with popular development boards and microcontrollers such as Arduino, ESP32, ESP8266, and other suitable systems.
An onboard LM393 comparator provides stable digital switching, while the red power indicator shows that the module is powered and the green indicator displays the digital switching output status. A fixed mounting hole is also provided for convenient installation.
Features
- Soil moisture detection module
- Provides analog and digital outputs
- Adjustable sensitivity using onboard potentiometer
- LM393 comparator for stable digital switching
- Operates from 3.3V to 5V DC
- Analog output for more detailed moisture monitoring
- Digital output for dry/wet threshold detection
- Red LED power indicator
- Green LED digital output indicator
- Fixed mounting hole for easy installation
- Compact PCB design
- Suitable for automatic plant watering systems
- Easy to connect with microcontrollers
Specifications
| Parameter | Specification |
|---|---|
| Product Type | Soil Moisture Sensor Module |
| Comparator IC | LM393 |
| Operating Voltage | 3.3V – 5V DC |
| Digital Output | D0 |
| Analog Output | A0 |
| Sensitivity Adjustment | Onboard Potentiometer |
| Digital Output Logic | 0 / 1 |
| PCB Dimensions | 3 cm × 1.5 cm |
| Soil Probe Dimensions | 6 cm × 2 cm |
| Cable Length | 21 cm |
| Power Indicator | Red LED |
| Digital Output Indicator | Green LED |
| Mounting | Fixed Bolt Hole |
| Interface Pins | VCC, GND, D0, A0 |
Pin Configuration
| Pin | Function |
|---|---|
| VCC | 3.3V–5V DC Power Input |
| GND | Ground |
| D0 | Digital Output |
| A0 | Analog Output |
Design and Construction
The sensor consists of a soil moisture probe connected to a compact LM393-based control PCB. The probe is inserted into the soil to detect changes in moisture, while the PCB processes the sensor signal and provides analog and digital outputs.
The PCB includes an adjustable potentiometer for sensitivity control, LED indicators for power and digital switching status, and a fixed mounting hole for easy installation. The approximately 21 cm cable provides convenient separation between the soil probe and control electronics.
Working Principle
The soil probe detects changes in the electrical characteristics of the soil caused by its moisture content. The detected signal is processed by the module and made available through the A0 analog output and D0 digital output.
The analog output provides a variable signal that can be read by a microcontroller’s ADC for more detailed soil moisture monitoring. The digital output is controlled by the LM393 comparator and the threshold set using the onboard potentiometer.
When the soil moisture crosses the configured threshold, the digital output switches between its two logic states. This signal can then be used by a microcontroller to activate an external relay, MOSFET, or other suitable control circuit for an automatic watering system.
Applications
- Automatic plant watering systems
- Smart gardening
- Arduino plant monitoring
- Soil moisture monitoring
- Agricultural projects
- Irrigation systems
- Greenhouse monitoring
- Indoor plant care
- DIY electronics projects
- IoT agriculture projects
- Smart farming prototypes
- Educational electronics projects
- Plant health monitoring
Package Includes
- 1 × Soil Moisture Sensor Module with LM393
- 1 × Soil Moisture Probe with Cable
Product Disclaimer
This module is intended for soil moisture detection and monitoring applications. It does not directly control a water pump or irrigation system; an appropriate relay, MOSFET, or motor driver may be required for pump control.
Avoid exposing the electronic control PCB to water or excessive moisture. Insert only the sensing probe into the soil.
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.
FAQs – Soil Moisture Sensor Module with LM393
1. What is the Soil Moisture Sensor Module used for?
It is used to detect the moisture level of soil for plant monitoring, automatic watering, irrigation, gardening, and agricultural projects.2. What is the operating voltage of the module?
The module operates with a 3.3V to 5V DC power supply.3. What outputs are available?
The module provides two outputs: A0 (analog output) and D0 (digital output).4. What is the function of the A0 pin?
The A0 analog output provides a variable signal that can be read by a microcontroller's ADC for more detailed soil moisture monitoring.5. What is the function of the D0 pin?
The D0 digital output provides a high or low logic signal when the detected moisture level crosses the threshold set using the onboard potentiometer.6. Can the sensitivity be adjusted?
Yes. The onboard potentiometer can be adjusted to set the desired digital detection sensitivity.7. What IC is used on the module?
The module uses an LM393 comparator IC for signal comparison and digital switching.8. Does the module have indicator LEDs?
Yes. It includes a red LED for power indication and a green LED for digital output status.9. Can this sensor be used for automatic plant watering?
Yes. The sensor can provide a signal to a microcontroller, which can then control a suitable relay, MOSFET, or pump driver for automatic watering.10. Does the sensor directly control a water pump?
No. The module only provides sensor outputs. An additional pump driver, relay, or MOSFET circuit is required to operate a water pump.11. What microcontrollers can be used with this sensor?
It can be used with Arduino, ESP32, ESP8266, STM32, and other microcontrollers with suitable analog or digital input support.12. What are the dimensions of the PCB?
The control PCB measures approximately 3 cm × 1.5 cm.13. What are the dimensions of the soil probe?
The soil probe measures approximately 6 cm × 2 cm.14. What is the cable length?
The cable connecting the probe to the control module is approximately 21 cm long.15. What are the pins on the module?
The module has four main pins: VCC, GND, D0, and A0.16. What does the VCC pin do?
The VCC pin supplies the module with 3.3V to 5V DC.17. What does the GND pin do?
The GND pin is the ground connection and should be connected to the ground of the power supply or microcontroller.18. Is there a mounting hole on the PCB?
Yes. A fixed bolt hole is provided for convenient installation and mounting.19. Can the sensor be used for indoor plants?
Yes. It is suitable for monitoring soil moisture in plant pots, indoor gardens, and home gardening projects.20. Can the sensor be used in agriculture?
Yes. It can be used for irrigation monitoring, greenhouse systems, smart farming prototypes, and agricultural automation.21. Can the analog output be used for precise moisture monitoring?
Yes. The analog output provides a continuously varying signal, making it more suitable than the digital output for monitoring relative changes in soil moisture.22. Should the entire module be placed in the soil?
No. Only the soil sensing probe should be inserted into the soil. Keep the control PCB protected from water and excessive moisture.23. Is the moisture probe removable?
The probe is connected to the control board through its cable and is designed to be positioned separately from the PCB for soil sensing.24. What is included in the package?
The package includes 1 × Soil Moisture Sensor Module with LM393 and 1 × Soil Moisture Probe with Cable.25. Can this sensor be used for DIY and educational projects?
Yes. Its simple interface and dual outputs make it suitable for DIY electronics, Arduino projects, educational experiments, smart gardening, and IoT applications.Only logged in customers who have purchased this product may leave a review.
Reviews
There are no reviews yet