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Arduino Based Wireless Intelligent Water Irrigation System

Made by nissiembeddedlab / Environmental Sensing / Home Automation / Plants / Productivity / Weather

About the project

This system monitors the weather and makes decisions about when to water.

Project info

Difficulty: Moderate

Platforms: Arduino, Atmel

Estimated time: 1 hour

License: GNU General Public License, version 3 or later (GPL3+)

Items used in this project

Hardware components

	433MHz Codec-Adaptive Wireless Relay	x 1
	12V 500mA Split Power Supply	x 1
	12V Solenoid Valve - 1/2in	x 1
	Jumper Wire Kit - 140pcs	x 1
	Soil Moisture Sensor Moisture Sensor	x 1
	Rain Hood 304SS Use wPF2000/PF22000	x 1
	Bluno MEGA 2560	x 1

Software apps and online services

Arduino IDE

Story

It consists of Arduino Mega 2560 micro controller unit, soil moisture sensor, raindrop sensor, RF wireless module relay unit, and solenoid valve. This system monitors the environment weather and makes a decision about when the solenoid valve should be open and motor goes to ON state. Data is transfered from the sensor to the MCU through wired communication. Motor and solenoid control signals will be transmitted through the wireless module. The MCU periodically checks the weather and soil conditions by the soil moisture sensor and rain drop sensor.

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1 / 5 • Rain drop Sensor and Soil moisture Sensor

Code

const int SMS1P = 48;
const int SMS1N = 49;
const int SMS2P = 46;
const int SMS2N = 47;
const int RDSP = 50;
const int RDSN = 51;
const int SMS1O = A11;
const int SMS2O = A12;
const int RDSO = A13;
const int Rline = 24;
const int Yline = 26;
const int Bline = 28;
const int Solenoid = 30;
int RDS = 0;
int SMS1 = 0;
int SMS2 = 0;
void rain_drop_sensor_ON();
void Soil_Moisture_Sensor1_ON();
void Soil_Moisture_Sensor2_ON();
void rain_drop_sensor_OFF();
void Soil_Moisture_Sensor1_OFF();
void Soil_Moisture_Sensor2_OFF();
void Solenoid_ON();
void Solenoid_OFF();
void Three_Phase_Motor_ON();
void Three_Phase_Motor_OFF();
void read_Sensors_value();
void setup() {
  pinMode(SMS1P, OUTPUT);
  pinMode(SMS2P, OUTPUT);
  pinMode(SMS1N, OUTPUT);
  pinMode(SMS2N, OUTPUT);
  pinMode(RDSP, OUTPUT);
  pinMode(RDSN, OUTPUT);
  pinMode(SMS1O, INPUT);
  pinMode(SMS2O, INPUT);
  pinMode(RDSO, INPUT);
  pinMode(Rline, OUTPUT);
  pinMode(Yline, OUTPUT);
  pinMode(Bline, OUTPUT);
  pinMode(Solenoid, OUTPUT);
  Three_Phase_Motor_OFF();
  Solenoid_OFF();
  Serial.begin(9600);
}
void loop() {
  rain_drop_sensor_ON();
  Soil_Moisture_Sensor1_ON();
  Soil_Moisture_Sensor2_ON();
  read_Sensors_value();
  RDS = analogRead(RDSO);
  SMS1 = analogRead(SMS1O);
  SMS2 = analogRead(SMS2O);
  delay(10);
  if (SMS1 < 100 && SMS2 < 100 && RDS > 200)
  {
    Three_Phase_Motor_ON();
    Solenoid_ON();
  }
  else if (SMS1 < 100 && SMS2 < 100 && RDS < 200)
  {
    Three_Phase_Motor_OFF();
    Solenoid_OFF();
  }
  else if (SMS1 < 100 && SMS2 > 100 && RDS > 200)
  {
    Three_Phase_Motor_ON();
    Solenoid_OFF();
  }
  else if (SMS1 < 100 && SMS2 > 100 && RDS < 200)
  {
    Three_Phase_Motor_ON();
    Solenoid_OFF();
  }
  else if (SMS1 > 100 && SMS2 < 100 && RDS > 200)
  {
    Three_Phase_Motor_OFF();
    Solenoid_ON();
  }
  else if (SMS1 > 100 && SMS2 < 100 && RDS < 200)
  {
    Three_Phase_Motor_OFF();
    Solenoid_OFF();
  }
  else if (SMS1 > 100 && SMS2 > 100 && RDS > 200)
  {
    Three_Phase_Motor_OFF();
    Solenoid_OFF();
  }
  else if (SMS1 > 100 && SMS2 > 100 && RDS < 200)
  {
    Three_Phase_Motor_OFF();
    Solenoid_OFF();
  }
  else
  {
    Three_Phase_Motor_OFF();
    Solenoid_OFF();
  }
}
void rain_drop_sensor_ON()
{
  digitalWrite(RDSP, HIGH);
  digitalWrite(RDSN, LOW);
}
void Soil_Moisture_Sensor1_ON()
{
  digitalWrite(SMS1P, HIGH);
  digitalWrite(SMS1N, LOW);
}
void Soil_Moisture_Sensor2_ON()
{
  digitalWrite(SMS2P, HIGH);
  digitalWrite(SMS2N, LOW);
}
void rain_drop_sensor_OFF()
{
  digitalWrite(RDSP, LOW);
  digitalWrite(RDSN, LOW);
}
void Soil_Moisture_Sensor1_OFF()
{
  digitalWrite(SMS1P, LOW);
  digitalWrite(SMS1N, LOW);
}
void Soil_Moisture_Sensor2_OFF()
{
  digitalWrite(SMS2P, LOW);
  digitalWrite(SMS2N, LOW);
}
void Solenoid_ON()
{
  digitalWrite(Solenoid, LOW);
}
void Solenoid_OFF()
{
  digitalWrite(Solenoid, HIGH);
}
void Three_Phase_Motor_ON()
{
  digitalWrite(Rline, LOW);
  digitalWrite(Yline, LOW);
  digitalWrite(Bline, LOW);
}
void Three_Phase_Motor_OFF()
{
  digitalWrite(Rline, HIGH);
  digitalWrite(Yline, HIGH);
  digitalWrite(Bline, HIGH);
}
void read_Sensors_value()
{
  SMS1 = analogRead(SMS1O);
  SMS2 = analogRead(SMS2O);
  RDS = analogRead(RDSO);
  Serial.println(SMS2);
  Serial.println(SMS1);
  Serial.println(RDS);
  delay(2000);
}

Credits

nissiembeddedlab

I am Embedded Engineer, Arduino and Embedded C Programmer. Had PCB design knowledge with KiCad. I own a youtube channel and manging a facebook page. I own a Lab in my native place to do academic projects.

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Arduino Based Wireless Intelligent Water Irrigation System

About the project

Project info