Soil Moisture Sensor- Water level
The Soil Moisture Sensor – Water Level module is a reliable and affordable solution for monitoring soil moisture and water content in real time. It is widely used in smart agriculture, gardening, and environmental monitoring systems. This sensor helps detect the water content of soil or the presence of water in a container, making it ideal for irrigation control, plant health monitoring, and automated watering systems. By integrating with microcontrollers such as Arduino, ESP32, or Raspberry Pi, users can build projects that optimize water usage and maintain healthy plant growth with minimal effort.
How It Works
The Soil Moisture Sensor – Water Level module operates by measuring the resistance between two probes. When the soil is dry, resistance is high, resulting in a lower output signal. Conversely, when the soil is wet, conductivity increases, lowering the resistance and producing a higher signal output. This simple yet effective principle allows the sensor to provide accurate readings of soil moisture or water presence. The module typically outputs both analog and digital signals, giving flexibility for threshold-based or continuous monitoring.
Key Features
Detects soil moisture and water levels effectively
Dual output: Analog (A0) and Digital (D0)
Adjustable sensitivity via onboard potentiometer
Compact and lightweight design
Low power consumption for continuous monitoring
Easy to interface with Arduino, ESP8266, ESP32, and Raspberry Pi
Ideal for smart irrigation and water-saving projects
Specifications
| Parameter | Value |
|---|---|
| Operating Voltage | 3.3V – 5V |
| Output Type | Analog and Digital |
| Detection Range | Varies with soil type and depth |
| PCB Size | Approx. 30 mm × 16 mm |
| Power Consumption | Low |
| Adjustment | Potentiometer for sensitivity |
Pin Configuration
| Pin | Name | Description |
|---|---|---|
| 1 | VCC | Power supply (3.3–5V) – |
| 2 | GND | Ground connection |
| 3 | A0 | Analog output |
| 4 | D0 | Digital output |
Applications
Smart irrigation and agricultural automation
Plant health monitoring systems
Indoor and outdoor gardening
Automated watering projects
Environmental research and soil testing
DIY electronics and educational kits
