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Gravity: Analog Soil Moisture Sensor For
Arduino
Moisture Sensor (SKU:SEN0114)
Contents [hide]
1 Introduction
2 Specification
3 Usage
4 More
Introduction
This Gravity: Analog Soil Moisture Sensor For Arduino 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 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).
It will be helpful to remind you to water your indoor plants or to monitor the soil moisture in your 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: 60x20x5mm
Value range:
0 ~300 : dry soil
300~700 : humid soil
700~950 : in water
Usage
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Moisture sensor Connection diagram
/*
# Example code for the moisture sensor
# Editor : Lauren
# Date : 13.01.2012
# Version : 1.0
# Connect the sensor to the A0(Analog 0) pin on the Arduino board
# the sensor value description
# 0 ~300 dry soil
# 300~700 humid soil
# 700~950 in water
*/
void setup(){
Serial.begin(57600);
}
void loop(){
Serial.print("Moisture Sensor Value:");
Serial.println(analogRead(A0));
delay(100);
}
Open the Arduino Serial Monitor, and choose its baud rate 57600 as set in the code.
More
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Relative humidity to absolute humidity calculator
Shopping online from Gravity: Analog Soil Moisture Sensor For Arduino or DFRobot Distributor.
Related category: DFRobot > sensors & modules > sensors > Temperature & Humidity Sensor
Categories: Product Manual DFR Series Sensors
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This page was last modified on 25 May 2017, at 14:37.
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