smana_00
Published © CC BY-NC-SA

Arduino Irrigation System

In this project we want to make an automatic irrigation system with Arduino.

EasyFull instructions provided3,038
Arduino Irrigation System

Things used in this project

Hardware components

Arduino UNO & Genuino UNO
Arduino UNO & Genuino UNO
×1
Breadboard (generic)
Breadboard (generic)
×1
Adafruit 10K Precision Epoxy Thermistor
×1
Rotary potentiometer (generic)
Rotary potentiometer (generic)
×1
Adafruit solenoid valve
×1
Relay (generic)
×1
Adafruit power supply
×1
Standard LCD - 16x2 White on Blue
Adafruit Standard LCD - 16x2 White on Blue
×1
DS3231M - ±5ppm, I2C Real-Time Clock
Maxim Integrated DS3231M - ±5ppm, I2C Real-Time Clock
×1
Resistor 10k ohm
Resistor 10k ohm
×1

Software apps and online services

Arduino IDE
Arduino IDE

Hand tools and fabrication machines

Laser cutter (generic)
Laser cutter (generic)

Story

Read more

Custom parts and enclosures

laser cutter file

laser cutter file

laser cutter file

laser cutter file

Schematics

Elettric

Code

Code

Arduino
#include <Wire.h>  //real time clock sensor library
#include <DS3231.h>
#include <LiquidCrystal.h> //LCD monitor library
#include <Keypad.h>  //keypad library

DS3231 clock;
RTCDateTime dt;
LiquidCrystal lcd(7, 8, 9, 10, 11, 12);   // initialize the library with the numbers of the interface pins

const byte ROWS = 4; //four rows
const byte COLS = 1; //one column
//define the cymbols on the buttons of the keypads
char hexaKeys[ROWS][COLS] = {
  {'1'},
  {'2'},
  {'3'},
  {'4'}
};
byte rowPins[ROWS] = {6, 5, 4, 3}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {2}; //connect to the column pinouts of the keypad

//initialize an instance of class NewKeypad
Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);

int ThermistorPin = A0; // Temperature sensor
int relaypin = 13; //relay pin

int Vore = 0;   //time, in hours
int Vmin = 0;   //time, in minutes
int Vtemp = 0;  //limit temperature
int VOfin = 0;  //end time, in hour
int VMfin = 0;  //end time, in minutes
int Vo = 0;     //conversion

float R1 = 10000;  //temperature sensor variables
float logR2, R2, T, Tc, Tf;
float c1 = 1.009249522e-03, c2 = 2.378405444e-04, c3 = 2.019202697e-07;

void setup() {
  clock.begin();
  clock.setDateTime(__DATE__, __TIME__);  //set up the real time clock sensor
  pinMode (ThermistorPin, INPUT);
  pinMode (relaypin, OUTPUT);
  lcd.begin(16, 2);   // set up the LCD's number of columns and rows:
  lcd.setCursor(0, 0);     //reset the lcd monitor
  lcd.print ("         ");
  lcd.setCursor(0, 1);
  lcd.print ("         ");
}

void loop() {
  Vo = analogRead(ThermistorPin); // reading the temperature and conversion in celsius
  R2 = R1 * (1023.0 / (float)Vo - 1.0);
  logR2 = log(R2);
  T = (1.0 / (c1 + c2 * logR2 + c3 * logR2 * logR2 * logR2));
  Tc = T - 273.15;
  dt = clock.getDateTime();   //reading the time from the  RTC DS3231
  char customKey1 = customKeypad.getKey();  //reading the keypad key
  if (customKey1 == '1' ) { // change of time 
    Vore = Vore + 1;
    if (Vore > 23) {
      Vore = 0;
    }
  }
  if (customKey1 == '2' ) {
    Vmin  = Vmin + 1;
    if (Vmin > 59) {
      Vmin = 0;
    }
  }
  if (customKey1 == '3' ) { //change of temperature
    Vtemp = Vtemp + 1;
    if (Vtemp > 40) {
      Vtemp = 0;
    }
  }
  lcd.setCursor(0, 0);   // set the cursor to column 0, line 0
  lcd.print ("Sh");      //print the time that it will start (start hour)
  lcd.print (Vore);      
  lcd.print(":");
  lcd.print(Vmin);
  lcd.print("  Ch");   //print the current time (current hour)
  lcd.print (dt.hour);
  lcd.print (":");
  lcd.print(dt.minute);
  lcd.setCursor(0, 1);   // set the cursor to column 0, line 1
  lcd.print ("Tl ");     //print the limit temperature
  lcd.print (Vtemp);
  lcd.print("C");  
  lcd.print(" Tm ");     //print the current temperature
  lcd.print (Tc);
  lcd.print("C");
  if ((dt.hour == Vore) && (dt.minute == Vmin)) {   //condition for irrigation
    if (Tc < Vtemp) {
      digitalWrite (relaypin, HIGH);      //start irrigate
      if (dt.second < 50) {
        VMfin = Vmin + 2;
        VOfin = Vore;        //set the final time of irrigation
        if (VMfin > 60) {
          VMfin = VMfin - 60;
          VOfin = Vore + 1;
          if (VOfin == 24) {
            VOfin = 0;
          }
        }
        delay(50000);      //delay to allow the correct calculation of the final time of irrigation, because we need to calculate it one time and not more//
      }
      delay(1000);       
    }
  }
  else if ((dt.hour == VOfin) && (dt.minute == VMfin)) {
    digitalWrite (relaypin, LOW);   //stop irrigate at final time of irrigation
  }
  else {
    delay(120);   //delay to refresh the LCD monitor
  }
}

Credits

smana_00

smana_00

0 projects • 5 followers
Contact

Comments