Published September 1, 2017 © GPL3+

Soil Moisture Sensor With LCD Display

Soil moisture sensor which gives you LCD display of percentage of moisture.

BeginnerFull instructions provided1 hour86,189

Things used in this project

Hardware components

Arduino UNO

SparkFun Soil Moisture Sensor (with Screw Terminals)

Adafruit Standard LCD - 16x2 White on Blue

Breadboard (generic)

Software apps and online services

Arduino IDE

circuito.io

Hand tools and fabrication machines

Soldering iron (generic)

Story

The project tells you about interfacing soil moisture sensor and LCD to give display. I forget everyday to water my plant and my grandmother used to recall me to water. So now I think I should build a project to show moisture so I remember that I have built project lets check out the moisture. So I quickly opened Circuito.io and added inputs and outputs and got schematic.

Connecting Moisture Sensor

Connect Soil Moisture 0 to GND.

Connect Soil Moisture Sig to Arduino A3.

Connect Soil Moisture Vin to Arduino 5v.

Connecting LCD

Connect LCD GND to GND.

Connect LCD SCL to Arduino A5.

Connect LCD SDA to Arduino A4.

LCD VCC to Arduino 5V.

Code

Untitled file

#include <LiquidCrystal.h> 
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(5, 4);
// These constants won't change. They're used to give names
// to the pins used:
const int analogInPin = A5; // Analog input pin that the Sensor is attached to
int sensorValue = 0; // value read from the Soil Moisture 
void setup() {
// set up the LCD's number of columns and rows:

lcd.begin(16, 2);
delay(100);
} 
void loop() {
lcd.clear();
lcd.print("Soil Moisture:");// print the results to the LCD Display:
sensorValue = analogRead(analogInPin);// read the analog in value:
lcd.setCursor(0, 1);
lcd.print(sensorValue);
// wait 300 milliseconds before the next loop for the 
//analog-to-digital converter to settle after the last reading:
delay(300);
}