Home Automation With Arduino, Buttons ,LCD ,EEPROM AND Smart Phone

Now we can control full home with smart Phone

for home automation you can add different things i choose switching or relay

In this project you will control switcher by mobile .if mobile is not present you can also operate with keypad

I also add lcd in the project to see the the present status of switches.

hardware required in this project

Android Mobile

jumper cables

16 * 2 LCD display

HC-06 Bluetooth Module

Arduino uno or MEGA

Bread Board

10k ohm varible for LCD

Relay Module

For making own relay Module

Relay

Transister

Resisters

PCB board

https://play.google.com/store/apps/details?id=com....

Download this app for home automation it can control 8 relay at a time

Its also have a timer.

To program on arduino use Arduino IDE which is available on

https://www.arduino.cc/en/Main/Software

this is the wiring sequence of relay module and relay module

This program is only for bluetooth and relay module

<p>#include <SoftwareSerial,h></p><p></p><p>SoftwareSerial mySerial(0, 1); // 1-RX, 0-TX - </p><p>int ch1 =  A0;
int ch2 =  A1;
int ch3 =  A2;
int ch4 =  A3;</p><p> void setup()
 {
 mySerial.begin(9600);</p><p> 
 pinMode(ch1, OUTPUT);
 pinMode(ch2, OUTPUT);
 pinMode(ch3, OUTPUT);
 pinMode(ch4, OUTPUT);</p><p> }</p><p> void loop()
{</p><p> char caracter = mySerial.read();</p><p> //--------------------------------ch1---------------------
 if(caracter == 'A')
{
 digitalWrite(ch1,HIGH);
 </p><p>}</p><p>if(caracter == 'a')
{
 digitalWrite(ch1,LOW);
 
}
//---------------------------------ch1----------------------
//---------------------------------ch2---------------------
 if(caracter == 'B')
{
 digitalWrite(ch2,HIGH);</p><p>}</p><p>if(caracter == 'b')
{
 digitalWrite(ch2,LOW);
 
}
//---------------------------------ch2----------------------
//---------------------------------ch3---------------------
 if(caracter == 'C')
{
 digitalWrite(ch3,HIGH);</p><p>}</p><p>if(caracter == 'c')
{
 digitalWrite(ch3,LOW);
  
}
//---------------------------------ch3----------------------
//---------------------------------ch4---------------------
 if(caracter == 'D')
{
 digitalWrite(ch4,HIGH);
 
}</p><p>if(caracter == 'd')
{
 digitalWrite(ch4,LOW);
  
}
//---------------------------------ch4----------------------</p><p> delay(10);
}</p>

* LCD RS pin to digital pin 12
* LCD Enable pin to digital pin 11

* LCD D4 pin to digital pin 5

* LCD D5 pin to digital pin 4

* LCD D6 pin to digital pin 3

* LCD D7 pin to digital pin 2

* LCD R/W pin to ground

* 10K resistor:

* ends to +5V and ground

* wiper to LCD VO pin (pin 3)

<p>#include <SoftwareSerial.h><br> SoftwareSerial mySerial(0, 1);  
#include <LiquidCrystal.h>

int ch1 =  A0;
int ch2 =  A1;
int ch3 =  A2;
int ch4 =  A3;
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);;//(rs, enable, d4, d5, d6, d7) </p><p> void setup()
 {
 mySerial.begin(9600);</p><p> 
 pinMode(ch1, OUTPUT);
 pinMode(ch2, OUTPUT);
 pinMode(ch3, OUTPUT);
 pinMode(ch4, OUTPUT);</p><p>lcd.begin(16, 2);</p><p> }</p><p> void loop()
{</p><p> char caracter = mySerial.read();</p><p> //--------------------------------ch1---------------------
 if(caracter == 'A')
{
 digitalWrite(ch1,HIGH);
 lcd.setCursor(0, 0);
 lcd.print("r1 ON");</p><p>}</p><p>if(caracter == 'a')
{
 digitalWrite(ch1,LOW);
 lcd.setCursor(0, 0);
 lcd.print("r1 OFF");
}
//---------------------------------ch1----------------------
//---------------------------------ch2---------------------
 if(caracter == 'B')
{
 digitalWrite(ch2,HIGH);
 lcd.setCursor(8, 0);
 lcd.print("r2 ON");
}</p><p>if(caracter == 'b')
{
 digitalWrite(ch2,LOW);
  lcd.setCursor(8, 0);
 lcd.print("r2 OFF");
}
//---------------------------------ch2----------------------
//---------------------------------ch3---------------------
 if(caracter == 'C')
{
 digitalWrite(ch3,HIGH);
  lcd.setCursor(0, 1);
 lcd.print("r3 ON");
}</p><p>if(caracter == 'c')
{
 digitalWrite(ch3,LOW);
  lcd.setCursor(0, 1);
 lcd.print("r3 OFF");
}
//---------------------------------ch3----------------------
//---------------------------------ch4---------------------
 if(caracter == 'D')
{
 digitalWrite(ch4,HIGH);
  lcd.setCursor(8, 1);
 lcd.print("r4 ON");
}</p><p>if(caracter == 'd')
{
 digitalWrite(ch4,LOW);
  lcd.setCursor(8, 1);
 lcd.print("r4 OFF");
}
//---------------------------------ch4----------------------</p><p> delay(10);
}</p>

Now we are adding Buttons

i use four button you can use it according to requirement

<p>#include <SoftwareSerial.h> //</p><p> SoftwareSerial mySerial(0, 1); // 1-RX, 0-TX - 
#include <LiquidCrystal.h></p><p>int ch1 =  A0;
int ch2 =  A1;
int ch3 =  A2;
int ch4 =  A3;
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);;//(rs, enable, d4, d5, d6, d7) 
int switchPin[] = {6,7,8,9};
 void setup()
 {
 mySerial.begin(9600);</p><p> 
 pinMode(ch1, OUTPUT);
 pinMode(ch2, OUTPUT);
 pinMode(ch3, OUTPUT);
 pinMode(ch4, OUTPUT);</p><p>lcd.begin(16, 2);</p><p>pinMode(switchPin[0], INPUT);
  digitalWrite(switchPin[0], HIGH);
  pinMode(switchPin[1], INPUT);
  digitalWrite(switchPin[1], HIGH);
  pinMode(switchPin[2], INPUT);
  digitalWrite(switchPin[2], HIGH);
  pinMode(switchPin[3], INPUT);
  digitalWrite(switchPin[3], HIGH);
   pinMode(switchPin[4], INPUT);
  digitalWrite(switchPin[4], HIGH);
 }</p><p> void loop()
{</p><p> char caracter = mySerial.read();</p><p> //--------------------------------ch1---------------------
 if(caracter == 'A')
{
 digitalWrite(ch1,HIGH);
 lcd.setCursor(0, 0);
 lcd.print("r1  ON");</p><p>}</p><p>if(caracter == 'a')
{
 digitalWrite(ch1,LOW);
 lcd.setCursor(0, 0);
 lcd.print("r1 OFF");
}
//---------------------------------ch1----------------------
//---------------------------------ch2---------------------
 if(caracter == 'B')
{
 digitalWrite(ch2,HIGH);
 lcd.setCursor(8, 0);
 lcd.print("r2  ON");
}</p><p>if(caracter == 'b')
{
 digitalWrite(ch2,LOW);
  lcd.setCursor(8, 0);
 lcd.print("r2 OFF");
}
//---------------------------------ch2----------------------
//---------------------------------ch3---------------------
 if(caracter == 'C')
{
 digitalWrite(ch3,HIGH);
  lcd.setCursor(0, 1);
 lcd.print("r3  ON");
}</p><p>if(caracter == 'c')
{
 digitalWrite(ch3,LOW);
  lcd.setCursor(0, 1);
 lcd.print("r3 OFF");
}
//---------------------------------ch3----------------------
//---------------------------------ch4---------------------
 if(caracter == 'D')
{
 digitalWrite(ch4,HIGH);
  lcd.setCursor(8, 1);
 lcd.print("r4  ON");
}</p><p>if(caracter == 'd')
{
 digitalWrite(ch4,LOW);
  lcd.setCursor(8, 1);
 lcd.print("r4 OFF");
}
//---------------------------------ch4----------------------
if (digitalRead(switchPin[0]) == LOW)
  {  // switch is pressed - pullup keeps pin high normally
       digitalWrite(ch1, HIGH) ; 
      lcd.setCursor(0, 0);
 lcd.print("r1  ON"); 
  }
  if (digitalRead(switchPin[0]) == LOW)
  {  // switch is pressed - pullup keeps pin high normally
        digitalWrite(ch1, LOW) ;
       lcd.setCursor(0, 0);
 lcd.print("r1 OFF"); 
  }
   if (digitalRead(switchPin[1]) == LOW)
  {  // switch is pressed - pullup keeps pin high normally
       digitalWrite(ch2, HIGH) ;
       lcd.setCursor(8, 0);
 lcd.print("r2  ON");
  }
  if (digitalRead(switchPin[1]) == LOW)
  {  // switch is pressed - pullup keeps pin high normally
        digitalWrite(ch2, LOW) ;
        lcd.setCursor(8, 0);
 lcd.print("r2 OFF"); 
  }
  if (digitalRead(switchPin[2]) == LOW)
  {  // switch is pressed - pullup keeps pin high normally
       digitalWrite(ch3, HIGH) ;
 lcd.setCursor(0, 1);
 lcd.print("r3  ON");
  }
  if (digitalRead(switchPin[2]) == LOW)
  {  // switch is pressed - pullup keeps pin high normally
        digitalWrite(ch3, LOW) ;
         lcd.setCursor(0, 1);
 lcd.print("r3 OFF");
  }
   if (digitalRead(switchPin[3]) == LOW)
  {  // switch is pressed - pullup keeps pin high normally
       digitalWrite(ch4, HIGH) ; 
        lcd.setCursor(8, 1);
 lcd.print("r4  ON");// toggle running variable
        
  }
  if (digitalRead(switchPin[3]) == LOW)
  {  // switch is pressed - pullup keeps pin high normally
        digitalWrite(ch4, LOW) ;
          lcd.setCursor(8, 1);
 lcd.print("r4 OFF");
  }</p><p> delay(0);
}</p>

Using EEPROM

I am adding internal EEPROM to save the last status

If the device go out of power and again connected

it load the last status of switches

those switches which are on before power off now they are still on

<p>#include <SoftwareSerial.h> //</p><p> SoftwareSerial mySerial(1, 0); // 1-RX, 0-TX - 
#include <LiquidCrystal.h></p><p>#include <EEPROM.h></p><p>int ch1 =  A0;
int ch2 =  A1;
int ch3 =  A2;
int ch4 =  A3;
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);;//(rs, enable, d4, d5, d6, d7) 
int switchPin[] = {6,7,8,9};
 void setup()
 {
 mySerial.begin(9600);</p><p> 
 pinMode(ch1, OUTPUT);
 pinMode(ch2, OUTPUT);
 pinMode(ch3, OUTPUT);
 pinMode(ch4, OUTPUT);</p><p>lcd.begin(16, 2);</p><p>pinMode(switchPin[0], INPUT);
  digitalWrite(switchPin[0], HIGH);
  pinMode(switchPin[1], INPUT);
  digitalWrite(switchPin[1], HIGH);
  pinMode(switchPin[2], INPUT);
  digitalWrite(switchPin[2], HIGH);
  pinMode(switchPin[3], INPUT);
  digitalWrite(switchPin[3], HIGH);
   pinMode(switchPin[4], INPUT);
  digitalWrite(switchPin[4], HIGH);</p><p>  if (EEPROM.read(0) == 1)
  {  // switch is pressed - pullup keeps pin high normally
       digitalWrite(ch1, HIGH) ; 
       lcd.setCursor(0, 0);
 lcd.print("r1  ON");
        // toggle running variable
          // indicate via LED
  }
  if (EEPROM.read(0) == 0)
  {  // switch is pressed - pullup keeps pin high normally
       digitalWrite(ch1, LOW) ;
       lcd.setCursor(0, 0);
 lcd.print("r1 OFF"); 
        // toggle running variable
          // indicate via LED
  }
  if (EEPROM.read(1) == 1)
  {  // switch is pressed - pullup keeps pin high normally
       digitalWrite(ch2, HIGH) ;
       lcd.setCursor(8, 0);
 lcd.print("r2  ON"); 
        // toggle running variable
          // indicate via LED
  }
  if (EEPROM.read(1) == 0)
  {  // switch is pressed - pullup keeps pin high normally
       digitalWrite(ch2, LOW) ;
        lcd.setCursor(8, 0);
 lcd.print("r2 OFF"); 
        // toggle running variable
          // indicate via LED
  }
  if (EEPROM.read(2) == 1)
  {  // switch is pressed - pullup keeps pin high normally
       digitalWrite(ch3, HIGH) ; 
       lcd.setCursor(0, 1);
 lcd.print("r3  ON");
        // toggle running variable
          // indicate via LED
  }
  if (EEPROM.read(2) == 0)
  {  // switch is pressed - pullup keeps pin high normally
       digitalWrite(ch3, LOW) ; 
       lcd.setCursor(0, 1);
 lcd.print("r3 OFF");
        // toggle running variable
          // indicate via LED
  }
  if (EEPROM.read(3) == 1)
  {  // switch is pressed - pullup keeps pin high normally
       digitalWrite(ch4, HIGH) ; 
       lcd.setCursor(8, 1);
 lcd.print("r4  ON");
        // toggle running variable
          // indicate via LED
  }
  if (EEPROM.read(3) == 0)
  {  // switch is pressed - pullup keeps pin high normally
       digitalWrite(ch4, LOW) ; 
       lcd.setCursor(8, 1);
 lcd.print("r3 OFF");
        // toggle running variable
          // indicate via LED
  }
 }
 </p><p> void loop()
{</p><p> char caracter = mySerial.read();</p><p> //--------------------------------ch1---------------------
 if(caracter == 'A')
{
 digitalWrite(ch1,HIGH);
 lcd.setCursor(0, 0);
 lcd.print("r1  ON");
EEPROM.write(0, 1);
}</p><p>if(caracter == 'a')
{
 digitalWrite(ch1,LOW);
 lcd.setCursor(0, 0);
 lcd.print("r1 OFF");
 EEPROM.write(0, 0);
}
//---------------------------------ch1----------------------
//---------------------------------ch2---------------------
 if(caracter == 'B')
{
 digitalWrite(ch2,HIGH);
 lcd.setCursor(8, 0);
 lcd.print("r2  ON");
 EEPROM.write(1, 1);
}</p><p>if(caracter == 'b')
{
 digitalWrite(ch2,LOW);
  lcd.setCursor(8, 0);
 lcd.print("r2 OFF");
 EEPROM.write(1, 0);
}
//---------------------------------ch2----------------------
//---------------------------------ch3---------------------
 if(caracter == 'C')
{
 digitalWrite(ch3,HIGH);
  lcd.setCursor(0, 1);
 lcd.print("r3  ON");
 EEPROM.write(2, 1);
}</p><p>if(caracter == 'c')
{
 digitalWrite(ch3,LOW);
  lcd.setCursor(0, 1);
 lcd.print("r3 OFF");
 EEPROM.write(2, 0);
}
//---------------------------------ch3----------------------
//---------------------------------ch4---------------------
 if(caracter == 'D')
{
 digitalWrite(ch4,HIGH);
  lcd.setCursor(8, 1);
 lcd.print("r4  ON");
 EEPROM.write(3, 1);
}</p><p>if(caracter == 'd')
{
 digitalWrite(ch4,LOW);
  lcd.setCursor(8, 1);
 lcd.print("r4 OFF");
 EEPROM.write(3, 0);
}
//---------------------------------ch4----------------------
if (digitalRead(switchPin[0]) == LOW)
  {  // switch is pressed - pullup keeps pin high normally
       digitalWrite(ch1, HIGH) ; 
      lcd.setCursor(0, 0);
 lcd.print("r1  ON");
 EEPROM.write(0, 1); 
  }
  if (digitalRead(switchPin[0]) == LOW)
  {  // switch is pressed - pullup keeps pin high normally
        digitalWrite(ch1, LOW) ;
       lcd.setCursor(0, 0);
 lcd.print("r1 OFF");
 EEPROM.write(0, 0); 
  }
   if (digitalRead(switchPin[1]) == LOW)
  {  // switch is pressed - pullup keeps pin high normally
       digitalWrite(ch2, HIGH) ;
       lcd.setCursor(8, 0);
 lcd.print("r2  ON");
  EEPROM.write(1, 1);
  }
  if (digitalRead(switchPin[1]) == LOW)
  {  // switch is pressed - pullup keeps pin high normally
        digitalWrite(ch2, LOW) ;
        lcd.setCursor(8, 0);
 lcd.print("r2 OFF");
 EEPROM.write(1, 0); 
  }
  if (digitalRead(switchPin[2]) == LOW)
  {  // switch is pressed - pullup keeps pin high normally
       digitalWrite(ch3, HIGH) ;
 lcd.setCursor(0, 1);
 lcd.print("r3  ON");
 EEPROM.write(2, 1);
  }
  if (digitalRead(switchPin[2]) == LOW)
  {  // switch is pressed - pullup keeps pin high normally
        digitalWrite(ch3, LOW) ;
         lcd.setCursor(0, 1);
 lcd.print("r3 OFF");
  EEPROM.write(2, 0);
  }
   if (digitalRead(switchPin[3]) == LOW)
  {  // switch is pressed - pullup keeps pin high normally
       digitalWrite(ch4, HIGH) ; 
        lcd.setCursor(8, 1);
 lcd.print("r4  ON");// toggle running variable
        EEPROM.write(3, 1);
  }
  if (digitalRead(switchPin[3]) == LOW)
  {  // switch is pressed - pullup keeps pin high normally
        digitalWrite(ch4, LOW) ;
          lcd.setCursor(8, 1);
 lcd.print("r4 OFF");
  EEPROM.write(3, 0);
  }</p><p> delay(0);
}</p>

If you want to add senser i think Arduino MEGA is Better because it has more pins than uno

if you want to use Arduino UNO Than use Shields