Name: Gravity: Analog Capacitive Corrosion Resistant Soil Moisture Sensor for Arduino & Raspberry Pi
Brand: DFRobot
SKU: SEN0193
Price: 5.9 USD
Availability: InStock

Introduction

Gravity: Capacitive Soil Moisture Sensor is ideal for environmental science courses and indoor gardening applications. Operating within a voltage range of 3.3 to 5.5V, this sensor provides an analog output of 1.2 to 2.5V, making it compatible with low-voltage MCUs, including both 3.3V and 5V logic systems, allowing for easy integration with popular platforms such as Arduino and Raspberry Pi. It features a waterproof detection area, effectively measuring soil moisture levels while resisting corrosion for reliable performance in outdoor and controlled environments. The capacitive design offers 2-3 times the lifespan of resistive sensors, ensuring long-term durability and dependable monitoring.

This detector is compatible with our 3-pin "Gravity" interface, which means it can be directly connected to the Gravity I/O Expansion Shield.

For more detailed insights on selecting the most suitable sensor, refer to the guide on [How to Select the Best Soil Moisture Sensors for Agriculture and Research Lab].

The following image shows an example project - a device that notifies you when a plant needs to be watered.

Gravity: Analog Capacitive Soil Moisture Sensor

Analog Soil Moisture Sensor Projects:

Analog Soil Moisture Sensor Project 1: IOT Plant Moisture Notifier

Get a text or call if your plant is getting too dry, along with a nice LCD display giving information regarding your plant's health.

Hardware Components:

Particle Photon
Soil Moisture Sensor For Arduino
I2C 16x2 Arduino LCD Display Module
RGB Diffused Common Cathode
Micro USB Connector
Uxcell Perf Board 4x6cm

Particle Photon Project 2: Annoying Soil Moisture Sensor with Photon and IFTTT Project

Never forget to water your plants again with this super annoying project. It combines visual, auditory, and textual cues that will prevent you from doing anything else until you provide your plant with much-needed hydration. A piezo buzzer constantly blares a shrill note, while a super-bright LED annoys your peripheral vision. In addition, this project will send constant texts to your phone reminding you that your plant needs to be watered. Sounds like fun, right?

Hardware Components:

Project 3: OBLOQ-IoT Module +Micro:bit IoT Flower Watering

Hardware Components:

Features

Supports Gravity 3-Pin Interface
Analog Output

Applications

Gardening & Farming
Moisture Detection
Intelligent Agriculture

Specification

Operating Voltage: 3.3 ~ 5.5 VDC
Output Voltage: 1.2 ~ 2.5V
Interface: PH2.0-3P
Dimension: 98mm * 23mm (3.86in x 0.905in)
Weight: 15g

Projects

Projects Project 1. Wireless Soil Moisture Probe with Helium and DFRobot
Plants die all the time from lack of watering. You're busy and those ferns aren't going to raise their hands when feeling parched. So, for the plant enthusiast on the go, this prototype soil moisture probe is your ticket to happy and healthy ferns and ficus.
Hardware list:

Constructing your complete soil moisture probe using the Gravity Capacitive Soil Moisture Sensor, a Helium Atom Prototyping Module, a Helium Arduino Adapter, and an Arduino UNO