Analog Soil Moisture Sensor

This Analog 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 an IOT garden/Agriculture.

This soil moisture sensor uses the two probes to pass current through the soil, and then it reads that resistance to get the moisture level. More water makes the soil conduct electricity more easily (less resistance), while dry soil conducts electricity poorly (more resistance). This sensor will be helpful to remind you to water you indoor plants or to monitor the soil moisture in you garden.

Specification:

• 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: 60mm x 20mm x 5mm(2.36×0.79×0.2″)
• Surface finish:Immersion Gold

Documents:

• Wiki (Analog Soil Moisture Sensor)