Part Number: SEN0114
Function: Moisture Sensor
Size : 60x20x5mm
Image :
Description
This moisture sensor can read the amount of moisture present in the soil surrounding it. It’s a low tech sensor, but ideal for monitoring an urban garden, or your pet plant’s water level. This is a must have tool for a connected garden!
This 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).
Application Circuit
Specification
1. Power supply : 3.3v or 5v
2. Output voltage signal : 0~4.2v
3. Current : 35mA
4. Pin definition :
(1) Analog output(Blue wire)
(2) GND(Black wire)
(3) Power(Red wire)
5. Value range :
(1) 0 ~300 : dry soil
(2) 300~700 : humid soil
(3) 700~950 : in water
Reference Site
1. http://forum.arduino.cc/index.php?topic=362022.0
2. https://www.dfrobot.com/wiki/index.php/Moisture_Sensor_(SKU:SEN0114)
SEN0114 Datasheet
