Smart irrigation system

This is a manual and automatic irrigation system

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Things used in this project

Hardware components

Arduino UNO

HC-05 Bluetooth Module

DFRobot Solar Power Manager (for 9V/12V/18V solar panel)

1N4007 – High Voltage, High Current Rated Diode

9V battery (generic)

water pump

Software apps and online services

Arduino IDE

MIT App Inventor

Story

My project is about irrigation system. It water the plant whenever the soil is dry and if we want more water we can do it by sitting in chair because the Bluetooth in the project connects with the system with the help of the app. After connecting you can check the status of the soil and pump the water and turn it off again.

I decided this to make it because in India specially farmer sometimes put more or less water in the crop and the outcome does not come perfectly. This leads to a loss and ultimately they suicide. So, this project helps to put accurate amount of water.

We have made our own soil moisture sensor which collects the moisture in the soil from 0 to 1023. If the moisture value is less than 200 it automatically pumps water in the soil. One more thing is that it takes solar energy to charge

Here we have use Arduino uno but in large farms you can use Arduiono mega and optocoupler.

Code

Code of project

const int motor = 13;
const int soilin = A0;
int sensorValue = 0;
char bt;
const int limit = 200;

void setup()
{
  Serial.begin(9600);
  pinMode(motor, OUTPUT);
  pinMode(soilin, INPUT);
}

void loop()
{
  sensorValue = analogRead(soilin);
  
  if (sensorValue < limit)
  {
    digitalWrite (motor, HIGH);
    delay(1000);
    digitalWrite (motor, LOW);
  }
  
  while (Serial.available()>0)
  {
    bt=Serial.read();
    delay(20);
    if (bt=='2')
    {
      Serial.println (sensorValue);
    }
    else if (bt=='1')
    {
      digitalWrite (motor, HIGH);
    }
    else if (bt=='0')
    {
      digitalWrite (motor, LOW);
    }
  }
}