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Gravity: Analog Soil Moisture Sensor For Arduino

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A soil moisture sensor can read the amount of moisture present in the soil surrounding it. It's an ideal for monitoring an urban garden, or your pet plant's water level. This is a must have component for a IOT garden / Agriculture!

The new soil moisture sensor uses Immersion Gold which protects the nickel from oxidation. Electroless nickel immersion gold (ENIG)  has several advantages over more conventional (and cheaper) surface platings such as HASL (solder), including excellent surface planarity (particularly helpful for PCB's with large BGA packages), good oxidation resistance, and usability for untreated contact surfaces such as membrane switches and contact points.
 

To ease the difficult of using this sensor,  a Gravity Interface is adapted to allow plug&play.  The Arduino IO expansion shield is the best match for this sound senor connecting to your Arduino


If you are going to place the sensor to very humid soil, that would make it very easy to get the sensor surface erosion within several days, hence we suggest to use this one Analog Capacitive Soil Moisture Sensor- Corrosion Resistant instead.

  • Power supply: 3.3v or 5v
  • Output voltage signal: 0~4.2v
  • Current: 35mA
  • Pin definition:
    • Analog output(Blue wire)
    • GND(Black wire)
    • Power(Red wire)
  • Size: 60x20x5mm(2.36x0.79x0.2")
  • Surface finish:Immersion Gold


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