Arduino Irrigation System

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

Jun 4, 2018

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vallauri

plants

garden

Components and supplies

Arduino Uno Rev3

Standard LCD - 16x2 White on Blue

solenoid valve

power supply

Relay (generic)

DS3231M - ±5ppm, I2C Real-Time Clock

Rotary potentiometer (generic)

Breadboard (generic)

Resistor 10k ohm

10K Precision Epoxy Thermistor

Tools and machines

Laser cutter (generic)

Apps and platforms

Arduino IDE

Project description

Code

arduino

1#include <Wire.h>  //real time clock sensor library
2#include <DS3231.h>
3#include   <LiquidCrystal.h> //LCD monitor library
4#include <Keypad.h>  //keypad library
5
6DS3231   clock;
7RTCDateTime dt;
8LiquidCrystal lcd(7, 8, 9, 10, 11, 12);   // initialize   the library with the numbers of the interface pins
9
10const byte ROWS = 4; //four   rows
11const byte COLS = 1; //one column
12//define the cymbols on the buttons   of the keypads
13char hexaKeys[ROWS][COLS] = {
14  {'1'},
15  {'2'},
16  {'3'},
17   {'4'}
18};
19byte rowPins[ROWS] = {6, 5, 4, 3}; //connect to the row pinouts   of the keypad
20byte colPins[COLS] = {2}; //connect to the column pinouts of the   keypad
21
22//initialize an instance of class NewKeypad
23Keypad customKeypad   = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);
24
25int ThermistorPin   = A0; // Temperature sensor
26int relaypin = 13; //relay pin
27
28int Vore =   0;   //time, in hours
29int Vmin = 0;   //time, in minutes
30int Vtemp = 0;  //limit   temperature
31int VOfin = 0;  //end time, in hour
32int VMfin = 0;  //end time,   in minutes
33int Vo = 0;     //conversion
34
35float R1 = 10000;  //temperature   sensor variables
36float logR2, R2, T, Tc, Tf;
37float c1 = 1.009249522e-03, c2   = 2.378405444e-04, c3 = 2.019202697e-07;
38
39void setup() {
40  clock.begin();
41   clock.setDateTime(__DATE__, __TIME__);  //set up the real time clock sensor
42   pinMode (ThermistorPin, INPUT);
43  pinMode (relaypin, OUTPUT);
44  lcd.begin(16,   2);   // set up the LCD's number of columns and rows:
45  lcd.setCursor(0, 0);      //reset the lcd monitor
46  lcd.print ("         ");
47  lcd.setCursor(0,   1);
48  lcd.print ("         ");
49}
50
51void loop() {
52  Vo = analogRead(ThermistorPin);   // reading the temperature and conversion in celsius
53  R2 = R1 * (1023.0 / (float)Vo   - 1.0);
54  logR2 = log(R2);
55  T = (1.0 / (c1 + c2 * logR2 + c3 * logR2 * logR2   * logR2));
56  Tc = T - 273.15;
57  dt = clock.getDateTime();   //reading the   time from the  RTC DS3231
58  char customKey1 = customKeypad.getKey();  //reading   the keypad key
59  if (customKey1 == '1' ) { // change of time 
60    Vore = Vore   + 1;
61    if (Vore > 23) {
62      Vore = 0;
63    }
64  }
65  if (customKey1   == '2' ) {
66    Vmin  = Vmin + 1;
67    if (Vmin > 59) {
68      Vmin = 0;
69     }
70  }
71  if (customKey1 == '3' ) { //change of temperature
72    Vtemp   = Vtemp + 1;
73    if (Vtemp > 40) {
74      Vtemp = 0;
75    }
76  }
77  lcd.setCursor(0,   0);   // set the cursor to column 0, line 0
78  lcd.print ("Sh");      //print   the time that it will start (start hour)
79  lcd.print (Vore);      
80  lcd.print(":");
81   lcd.print(Vmin);
82  lcd.print("  Ch");   //print the current time (current   hour)
83  lcd.print (dt.hour);
84  lcd.print (":");
85  lcd.print(dt.minute);
86   lcd.setCursor(0, 1);   // set the cursor to column 0, line 1
87  lcd.print ("Tl   ");     //print the limit temperature
88  lcd.print (Vtemp);
89  lcd.print("C");   
90  lcd.print(" Tm ");     //print the current temperature
91  lcd.print   (Tc);
92  lcd.print("C");
93  if ((dt.hour == Vore) && (dt.minute == Vmin))   {   //condition for irrigation
94    if (Tc < Vtemp) {
95      digitalWrite (relaypin,   HIGH);      //start irrigate
96      if (dt.second < 50) {
97        VMfin = Vmin   + 2;
98        VOfin = Vore;        //set the final time of irrigation
99        if   (VMfin > 60) {
100          VMfin = VMfin - 60;
101          VOfin = Vore + 1;
102           if (VOfin == 24) {
103            VOfin = 0;
104          }
105        }
106         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//
107       }
108      delay(1000);       
109    }
110  }
111  else if ((dt.hour == VOfin)   && (dt.minute == VMfin)) {
112    digitalWrite (relaypin, LOW);   //stop irrigate   at final time of irrigation
113  }
114  else {
115    delay(120);   //delay to refresh   the LCD monitor
116  }
117}
118

#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
  }
}

Code

arduino

1#include <Wire.h>  //real time clock sensor library
2#include <DS3231.h>
3#include  <LiquidCrystal.h> //LCD monitor library
4#include <Keypad.h>  //keypad library
5
6DS3231  clock;
7RTCDateTime dt;
8LiquidCrystal lcd(7, 8, 9, 10, 11, 12);   // initialize  the library with the numbers of the interface pins
9
10const byte ROWS = 4; //four  rows
11const byte COLS = 1; //one column
12//define the cymbols on the buttons  of the keypads
13char hexaKeys[ROWS][COLS] = {
14  {'1'},
15  {'2'},
16  {'3'},
17  {'4'}
18};
19byte rowPins[ROWS] = {6, 5, 4, 3}; //connect to the row pinouts  of the keypad
20byte colPins[COLS] = {2}; //connect to the column pinouts of the  keypad
21
22//initialize an instance of class NewKeypad
23Keypad customKeypad  = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);
24
25int ThermistorPin  = A0; // Temperature sensor
26int relaypin = 13; //relay pin
27
28int Vore =  0;   //time, in hours
29int Vmin = 0;   //time, in minutes
30int Vtemp = 0;  //limit  temperature
31int VOfin = 0;  //end time, in hour
32int VMfin = 0;  //end time,  in minutes
33int Vo = 0;     //conversion
34
35float R1 = 10000;  //temperature  sensor variables
36float logR2, R2, T, Tc, Tf;
37float c1 = 1.009249522e-03, c2  = 2.378405444e-04, c3 = 2.019202697e-07;
38
39void setup() {
40  clock.begin();
41  clock.setDateTime(__DATE__, __TIME__);  //set up the real time clock sensor
42  pinMode (ThermistorPin, INPUT);
43  pinMode (relaypin, OUTPUT);
44  lcd.begin(16,  2);   // set up the LCD's number of columns and rows:
45  lcd.setCursor(0, 0);     //reset the lcd monitor
46  lcd.print ("         ");
47  lcd.setCursor(0,  1);
48  lcd.print ("         ");
49}
50
51void loop() {
52  Vo = analogRead(ThermistorPin);  // reading the temperature and conversion in celsius
53  R2 = R1 * (1023.0 / (float)Vo  - 1.0);
54  logR2 = log(R2);
55  T = (1.0 / (c1 + c2 * logR2 + c3 * logR2 * logR2  * logR2));
56  Tc = T - 273.15;
57  dt = clock.getDateTime();   //reading the  time from the  RTC DS3231
58  char customKey1 = customKeypad.getKey();  //reading  the keypad key
59  if (customKey1 == '1' ) { // change of time 
60    Vore = Vore  + 1;
61    if (Vore > 23) {
62      Vore = 0;
63    }
64  }
65  if (customKey1  == '2' ) {
66    Vmin  = Vmin + 1;
67    if (Vmin > 59) {
68      Vmin = 0;
69    }
70  }
71  if (customKey1 == '3' ) { //change of temperature
72    Vtemp  = Vtemp + 1;
73    if (Vtemp > 40) {
74      Vtemp = 0;
75    }
76  }
77  lcd.setCursor(0,  0);   // set the cursor to column 0, line 0
78  lcd.print ("Sh");      //print  the time that it will start (start hour)
79  lcd.print (Vore);      
80  lcd.print(":");
81  lcd.print(Vmin);
82  lcd.print("  Ch");   //print the current time (current  hour)
83  lcd.print (dt.hour);
84  lcd.print (":");
85  lcd.print(dt.minute);
86  lcd.setCursor(0, 1);   // set the cursor to column 0, line 1
87  lcd.print ("Tl  ");     //print the limit temperature
88  lcd.print (Vtemp);
89  lcd.print("C");  
90  lcd.print(" Tm ");     //print the current temperature
91  lcd.print  (Tc);
92  lcd.print("C");
93  if ((dt.hour == Vore) && (dt.minute == Vmin))  {   //condition for irrigation
94    if (Tc < Vtemp) {
95      digitalWrite (relaypin,  HIGH);      //start irrigate
96      if (dt.second < 50) {
97        VMfin = Vmin  + 2;
98        VOfin = Vore;        //set the final time of irrigation
99        if  (VMfin > 60) {
100          VMfin = VMfin - 60;
101          VOfin = Vore + 1;
102          if (VOfin == 24) {
103            VOfin = 0;
104          }
105        }
106        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//
107      }
108      delay(1000);       
109    }
110  }
111  else if ((dt.hour == VOfin)  && (dt.minute == VMfin)) {
112    digitalWrite (relaypin, LOW);   //stop irrigate  at final time of irrigation
113  }
114  else {
115    delay(120);   //delay to refresh  the LCD monitor
116  }
117}
118

#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
  }
}

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