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Gravity: Analog Capacitive Corrosion Resistant Soil Moisture Sensor for Arduino / Raspberry Pi

SKU: SEN0193

Our soil moisture sensor uses capacitive sensing (not resistive like other sensors) and corrosion resistant material for excellent service life. Insert it in soil around your plants for real-time moisture data! It has an on-board voltage regulator (3.3~5.5V), perfect for 3.3V/5V low-voltage MCUs. Raspberry Pi needs an ADC converter. Compatible with our 3-pin "Gravity" interface, it can be directly connected to the Gravity I/O expansion shield.

Angled shot of back of analog capacitive soil moisture sensor with corrosion resistant design.-DFRobot product sku:SEN0193 image.

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    • Specification

    Parameter Value
    Operating Voltage 3.3 ~ 5.5 VDC
    Output Voltage 0 ~ 3.0VDC
    Operating Current 5mA
    Interface PH2.0-3P
    Dimensions 3.86 x 0.905 inches (L x W)
    Weight 15g

    FAQ

    • How is it impacted by organic content? In my experience organic content has distorted SOIL MOISTURE measurement to the tune of 50+ percent. Have you accounted for this effect? Since many farmers uses organic manure, it will impact true soil moisture measurement.

      It's already all the way in (its in the soil a little bit under the line), the soil is fertile, so I understand there is no good solution/ this sensor isn't good for my use? Any other solution?

    • What about rust? Rust of the sensor?

      Hello Asterion,

      Welcome!

      So I am not sure if I got you fully, do you suggest us to make the sensor to have the feature of wifi, so it could be inserted into the gardening earth 15-20cm?

      If it is, I just want to say It's a great idea, it will save a lot of cables and people can use it more freely, thanks a lot for your contribution!

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