SparkFun Soil Moisture Sensor



  • SparkFun
Availability: In Stock

The SparkFun Soil Moisture Sensor is a simple device designed to measure the moisture content of soil. It uses a very basic resistive sensing principle, where the higher the moisture, the lower the resistance will be. The board is easy to use and gold plated to combat corrosion.


SKU: SEN-082 Manufacturer: SparkFun Mfg Part Number: SEN-13322 Category: Tags: , , ,


The SparkFun Soil Moisture Sensor is a simple breakout for measuring the moisture in soil and similar materials. The soil moisture sensor is pretty straight forward to use. The two large exposed pads function as probes for the sensor, together acting as a variable resistor. The more water that is in the soil means the better the conductivity between the pads will be and will result in a lower resistance, and a higher SIG out.

To get the SparkFun Soil Moisture Sensor functioning all you will need is to connect the VCC and GND pins to your Arduino-based device (or compatible development board) and you will receive a SIG out which will depend on the amount of water in the soil. One commonly known issue with soil moisture sensor is their short lifespan when exposed to a moist environment. To combat this, SparkFun have had the PCB coated in Gold Finishing (ENIG or Electroless Nickel Immersion Gold). We recommend either a simple 3-pin screw pin terminal or a 3-pin jumper wire assembly to be soldered onto the sensor for easy wiring.

This sensor is compatible with our Irrigation HAT for Raspberry Pi and our Irrigation Board for Raspberry Pi Pico


  • Easy to use
  • Gold plated for longevity in a moist environment
  • Dimensions: 62 x 24 x 2.6mm

Package Contents

  • 1 x SparkFun Soil Moisture Sensor

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  Difficulty Level

Soldering Skill: Beginner
Prototyping Skill: Beginner
Programming Skill: Beginner

  Product Certifications

  Product Attributes

Weight: 4 g

  Warranty Policy

This product has a 30 Day Warranty from the date of delivery. The item must not be modified, abused, incorrectly hooked up, or used for purposes outside the original scope of design.

  Return Policy

This product is returnable Within 14 Days of delivery for a store credit. Item must be unopened, unused, and in re-saleable condition.

More Information:
For more information on our Warranty and Return Policies, please consult our   Terms of Service


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