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Maker Soil Moisture Sensor (Capacitive)

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    • S$7.00
  • Ex Tax: S$7.00
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Grove 4 Pin Buckled to Female Cable

Grove 4 Pin Buckled to Female Cable

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S$0.54 Ex Tax: S$0.54

Grove to JST-SH(qwiic) Cable - 20cm

Grove to JST-SH(qwiic) Cable - 20cm

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  • Total accessories: S$0.0
  • Grand total: 7

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  • Warranty Period: 12 months

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Maker Soil Moisture Sensor measures soil moisture by capacitive sensing, where the presence of water in the soil will increase the probe capacitance. The output of the sensor is analog output; higher moisture levels will produce lower output voltage. Being part of the Maker Seriesthe sensor is equipped with many features to further simplify digital making for beginners and experts alike.



The Maker Soil Moisture Sensor is easy to use. It only needs a power supply, if the LED indicators alone are enough for your application. Make sure that the voltage level of the power supply is within the sensor specifications. Note that the LED indicators only indicate approximate moisture levels and might fluctuate depending on the power supply, since the sensor does not have a voltage regulator on board.

Full Tutorials: Battery Powered Maker Soil Moisture Sensor


Maker Soil Moisture Sensor can also be used with microcontrollers to build more complex projects like smart gardens and self-watering systems. The analog output voltage of the sensor is used for these applications. Furthermore, the sensor also has a disable pin for power saving applications. Sending HIGH signal to the disable pin will disable the sensor. 

Full Tutorials: Self Watering Pot Featuring Maker Soil Moisture Sensor


It is important to note that this sensor can only qualitatively test the humidity of the soil and cannot measure quantitatively. Which means when the humidity of the soil rises, the value of the output decreases; conversely, when the humidity decreases, the output value becomes higher.


  • Operating Voltage: 2.5V - 7.0V.

  • Output: Analog Voltage (Higher moisture = lower voltage)

  • Grove port.

  • LED indicators for dry/moist/wet soil moisture levels.

  • Soil Limit (Maximum depth of the probe)

  • Double-sided probe (More sensitive to moisture changes)

  • Capacitive sensing probe (Corrosion resistant)

  • Disable pin (Power-saving application)


Example Applications:

  • Soil moisture detection

  • Automatic Plant Watering System

  • Smart/IoT Gardens



Packing List
  • 1 x Maker Soil Moisture sensor
  • 1 x 50cm Grove to Grove cable

Q & A (2)
I'm still having problems with the sensor. Both LEDs (green and blue) are on at 1.88V measurement with supplied voltage of 3.3V. What's the precision of the ranges? ( Christina Souza, 11/01/2023 )
Hi, kindly reach us using email to support@cytron.io . We are happy to help you from there for any issues you experienced.
Is there a lifetime for the Maker Soil Moisture Sensor (Capacitive)? Does it wear down with use? ( Christina Souza, 10/01/2023 )
Hi, thank you for your question. The copper is not exposed and is protected by the solder mask. So it won’t wear down with time.

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Tags: soil moisture sensor, soil humidity sensor, corrosion resistant soil moisture sensor, capacitive soil moisture sensor, smart gardening, self-watering, plant monitoring