How to connect a Soil moisture sensor to Arduino

Toolkit
Specification
PIN Assignment
Example Code
Rerefences

Toolkit

1x Arduino Uno
1x Soil Moisture Sensor For arduino
1x Soil Hygrometer Detection Module
Wires to connect the sensor to Arduino

Arduino Uno with an attached Soil moisture sensor

Specification

This is a simple water sensor, can be used to detect soil moisture. Module Output is high level when the soil moisture deficit,or output is low. This sensor is inexpensive and easy to use but very accurate so the starters and the experts can use all of it's functions.

Can be used in module plant waterer device, and the plants in your garden no need people to manage. Adjustable sensitivity by adjusting the digital potentiometer.

Operating voltage: 3.3V~5V
Dual output mode,analog output more accurate.
A fixed bolt hole for easy installation
Panel PCB Dimension: 30mm * 16mm
Soil Probe Dimension:60mm*30mm
With power indicator (red) and digital switching output indicator (green)
Having LM393 comparator chip, stable

Soil Moisture Sensor local circuit

PIN Assignment

VCC : 3,3V to 5V
GND : External GND
DO : Digital output interface (0 and 1)
AO : Analog output interface
The local circuit - simple, voltage flipping style sensor

How to wire humidity sensor to Arduino UNO

Example Code

Arduino Code:

void setup() {
// initialize serial communication at 9600 bits per second:
Serial.begin(9600);
}

void loop() {
// read the input on analog pin 0:
int sensorValue = analogRead(A0); Serial.println(sensorValue);
delay(100);
}