Semi automted irrigation system

With this project we want to show to people a way to try to reduce water waste. And help old, young people's plant survive.

IntermediateFull instructions provided639

Things used in this project

Hardware components

Relay (generic)

Arduino UNO

Jumper wires (generic)

Water pump

9V battery (generic)

Slide Switch

Telecontrolli Ceramic Capacitive Rain Sensor

Humidity Sensor, 20% to 90% Relative Humidity

Breadboard (generic)

LED (generic)

One red, one blue and one green

Resistor 221 ohm

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Laser cutter (generic)

Soldering iron (generic)

Multitool, Screwdriver

Scissor, Electrician

Story

The project purpose of this project is to water a plant in a semi-automated way, by detecting data both of soil moisture and rain, through the respective sensors.

We decided to make this project beacause we are intersted in this kind of assignement that can help everyone, it may be very useful for everybody and it's a way also to try to reduce the water waste and can aslo help the plant to grow up in a correct way, without problems.

This project works in this way. For first thing the two sensor, the sensor of humidity and the sensor of rain, measure the humidity of the land and also if it's raining. And then if the humidity is low and it isn't raining the pump and the green LED turn on and water the plant for five seconds and the it turn off. If the humidity is high or it's raining the pump doesn't turn on but the red LED turn on for five seconds and then it turn off.

Here there are two pictures of our project:

Geen LED and water pump on

The led blu means that the sensore are measuring

Blue LED on

in this case the red LED is on beacause of the high humidity of the land and for this the water pump doesn't turn on

Red LED on and water pump off

This is the you tube video

Schematics

Code

SEMI_AUTOMATED_IRRIGATION_SYSTEM_Arduino_Code.ino

int pinrain = A0;                                      // set all moisture sensors PIN ID
int valrain = 0;                                       // declare rain values
int pinhumidity = A1;                                  // Variable declaration
int valhumidity = 0;                                   // declare humidity values
int ledgreen = 2;                                      // Variable declaration
int startmisu = 9;                                     // Variable declaration
int ledred = 10;                                       // Variable declaration
int relaypump = 7;                                     // Variable declaration

void setup () {
  Serial.begin (9600);                                 // open the serial port at 9600 bps
  pinMode (pinrain, INPUT);                            // declare the sensor as input
  pinMode (pinhumidity, INPUT);                        // declare the sensor as input
  pinMode (startmisu, OUTPUT);                         // declare LED as output
  pinMode (ledgreen, OUTPUT);                          // declare LED as output
  pinMode (ledred, OUTPUT);                            // declare LED as output
  pinMode (relaypump, OUTPUT);                         // declare relay as output

}
void loop () {

  delay (3000);                                         // wait 3000 millisecond
  digitalWrite (startmisu, HIGH);                       // turn the LED on HIGH
  valrain = analogRead (pinrain);                       // read the value from the rain sensors:
  valhumidity = analogRead (pinhumidity);               // read the value from the moisture sensors:
  delay (3000);                                         // wait 3000 millisecond
  digitalWrite (startmisu, LOW);                        // turn the LED on LOW
  Serial.print("valore pioggia: ");                     // print as an ASCII-encoded decimal
  Serial.println(valrain);                              // print as an ASCII-encoded decimal
  Serial.print("valore umidit: ");                     // read the value from the moisture sensors:
  Serial.println(valhumidity);                          // print as an ASCII-encoded decimal
  delay (5000);                                         // wait 5000 millisecond
  
  if ((valrain >= 800) & (valhumidity <= 650)) {        // check which plant need water
    digitalWrite (ledgreen, HIGH);                      // turn the LED on HIGH
    digitalWrite (relaypump, HIGH);                     // turn the relay on HIGH
    delay (5000);                                       // wait 5000 millisecond

    digitalWrite (ledgreen, LOW);                       // turn the LED on LOW
    digitalWrite (relaypump, LOW);                      // turn the relay on LOW
  }
  if ((valrain < 800) & (valhumidity > 650)) {          // check which plant need water
    digitalWrite (ledred, HIGH);                        // turn the LED on HIGH
    delay (5000);                                       // wait 5000 millisecond
    digitalWrite (ledred, LOW);                         // turn the LED on LOW
  }
  if ((valrain < 800) & (valhumidity <= 650)) {         // check which plant need water
    digitalWrite (ledred, HIGH);                        // turn the LED on HIGH
    delay (5000);                                       // wait 5000 millisecond
    digitalWrite (ledred, LOW);                         // turn the LED on LOW
  }
  if ((valrain > 800) & (valhumidity > 650)) {          // check which plant need water
    digitalWrite (ledred, HIGH);                        // turn the LED on HIGH
    delay (5000);                                       // wait 5000 millisecond
    digitalWrite (ledred, LOW);                         // turn the LED on LOW
  }
}