Gravity: Analog Soil Moisture Sensor for Arduino & Raspberry Pi SEN0114

The Gravity: Analog Soil Moisture Sensor (SEN0114) provides a simple and cost-effective way to detect soil moisture levels using resistive sensing. With a 0–4.2V analog output, it's ideal for indoor plant monitoring, educational electronics, and smart home IoT projects.

Designed for use with Arduino, Raspberry Pi, and other 3.3V/5V microcontrollers, this sensor features an easy-to-use Gravity Interface for plug-and-play integration.

Projects

Key Features

• Analog output: 0–4.2V for real-time moisture readings

• Power supply: Compatible with both 3.3V and 5V systems

• Simple resistive measurement for detecting wet or dry soil

• ENIG surface plating for improved oxidation resistance and durability

• Gravity interface ensures seamless Arduino/Raspberry Pi integration

• Perfect for indoor gardening, classroom projects, and basic soil monitoring

How It Works

This soil moisture sensor measures the resistance between two probes inserted into the soil. The more water present, the lower the resistance, and vice versa. This analog signal is then interpreted by the microcontroller to determine soil moisture content.

Note: This sensor is designed for short-term use. For extended or high-humidity environments, consider using the Analog Capacitive Soil Moisture Sensor – Corrosion Resistant for better long-term performance.

Applications

• Indoor plant care

• Smart home watering reminders

• IoT environmental monitoring

• STEM and electronics education

• Basic soil moisture detection systems

Specifications

• Power Supply: 3.3V or 5V

• Analog Output Voltage: 0 ~ 4.2V

• Current Consumption: 35mA

• Pin Definition:

  • Red: Power

  • Black: GND

  • Blue: Analog Output

• Size: 60 × 20 × 5mm (2.36 × 0.79 × 0.2 inches)

• Surface Finish: Immersion Gold (ENIG) for enhanced durability

Package Includes

• 1 × Analog Soil Moisture Sensor

• 1 × Analog Sensor Cable