Arduino Project - Irrigation system

Arduino irrigation system

Operation

The Soil Moisture Sensor measures soil moisture grace to the changes in electrical conductivity of the earth ( soil resistance increases with drought ).

The electrical resistance is measured between the two electrodes of the sensor.

A comparator activates a digital output when an adjustable threshold is exceeded

 

int sensor = A1;

int pump = 13;

#include <LiquidCrystal.h>

const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;

LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

void setup() {

 lcd.begin(16, 2);

 lcd.print("System Run Start!");

  lcd.noDisplay();

  delay(1000);

   lcd.display();

  delay(500);

  

pinMode(sensor, INPUT);

pinMode(pump,OUTPUT);

Serial.begin(9600);

}

void loop() {

 lcd.setCursor(0, 1);

 int sensorValue = analogRead(sensor);

 Serial.println(sensorValue);

 lcd.print("sen.val = ");

 lcd.print(sensorValue);

 

 

 while (analogRead(sensor) <  200 );

{

digitalWrite(pump, HIGH);

delay(1500);

Serial.println(sensorValue);

lcd.setCursor(0, 1);

lcd.print("Pump ON ");

}

digitalWrite(pump, LOW);

delay(1000);

}

Project - Tharindu Nishantha