M5Stack Earth Moisture Unit

M5StackSKU: RB-Mst-60
Manufacturer #: U019

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  • M5Stack Earth Moisture Unit
  • Offers two Lego-compatible holes
  • Measures moisture in the soil
  • Lets you adjust the threshold
  • Provides Analog and Digital output
  • GROVE interface: UIFlow, and Arduino

The M5Stack Earth Moisture Unit is a Soil Moisture Sensor for measuring the moisture in the 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 higher moisture that is in the soil means the better the conductivity between the two so that the sensor will result in lower resistance, and a higher SIG out.

  • 1 x EARTH unit
  • 1 x GROVE Cable


  • 64.4 x 24.1 x 8.1 mm
  • Output: Analog & Digital
  • GROVE interface: UIFlow, and Arduino
  • Lego-compatible holes: 2
  • Weight: 5 g

Customer Reviews

Based on 2 reviews
Didn't last

Works great out of the box. Easy to intergrate. I had 2 units. After 1 week one of the units stopped reading anything, the other lasted a week after that. The metal on the probes peels off and can no longer sense anything.


Work as expected !

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