> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# SparkFun Qwiic Soil Moisture Sensor

**Type:** Product page · **SKU:** SEN-17731 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/sparkfun-qwiic-soil-moisture-sensor.html ([markdown](https://core-electronics.com.au/sparkfun-qwiic-soil-moisture-sensor.html.md))

## Retired product

This product is retired and no longer available for purchase. Replaced by: SEN-24409.

**Replacement:** https://core-electronics.com.au/catalog/product/view/sku/SEN-24409

## How to buy

- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

The SparkFun Qwiic Soil Moisture Sensor is a simple breakout for measuring the moisture in soil and similar materials. The soil moisture sensor is pretty straightforward 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, resulting in a lower resistance and a higher SIG out. This version of the Soil Moisture Sensor includes a Qwiic connector, making it even easier to use this sensor!

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). You will receive a SIG out, which will depend on the amount of water in the soil. One commonly known issue with soil moisture senors is their short lifespan when exposed to a moist environment. To combat this, we’ve had the PCB coated in gold finishing (ENIG, or Electroless Nickel Immersion Gold).

**Note:** Check the Hookup Guide below for assembly and weatherproofing instructions, as well as a simple example project that you can put together yourself!

 [Get Started with the Soil Moisture Sensor Guide](https://learn.sparkfun.com/tutorials/soil-moisture-sensor-hookup-guide)**Documents**

- [Schematic (PDF)](https://core-electronics.com.au/attachments/localcontent/17731-QwiicSoilMoistureSensor-Schematic_18740fbd00f.pdf)
- [Eagle Files (ZIP)](https://core-electronics.com.au/attachments/localcontent/17731-QwiicSoilMoistureSensor-EagleFiles_12103bc8be6.zip)
- [Hookup Guide](https://learn.sparkfun.com/tutorials/soil-moisture-sensor-hookup-guide)
- [Qwiic Resource Page](https://www.sparkfun.com/qwiic)
- [GitHub Hardware Repo](https://github.com/sparkfun/Zio-Qwiic-Soil-Moisture-Sensor/tree/master/EAGLE)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/1/7/17731-sparkfun_qwiic_soil_moisture_sensor-01.jpg)