Mobile DTMF Based Home Automation

Circuit Diagram :-

Code :-

 
//Prateek
//www.prateeks.in

#include <LiquidCrystal_I2C.h>
#include <Wire.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
#include <SoftwareSerial.h>
#include "Talkie.h"
#include "Vocab_US_Large.h"
#include "Vocab_Special.h"
Talkie voice;

# define GSM_RX 9 
# define GSM_TX 10 


int P_E = 11;
int P_EE = 12; 
int P_EEE = 8;
int P_EEEE = 7; 

# define LIGHT1 6
# define LIGHT2 5
# define LIGHT3 4
# define LIGHT4 3
SoftwareSerial gsm_board(GSM_RX,GSM_TX);
boolean call_flag=0, relay_flag=0;
int i=0,j=0,x=-1;
char n[3];
void gsm_initilaize();
void relay(); 

void setup()
{

lcd.begin(16, 2);
gsm_board.begin(9600);
Serial.begin(9600);
lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  
pinMode(P_E, OUTPUT); 
pinMode(P_EE, OUTPUT);
pinMode(P_EEE, OUTPUT); 
pinMode(P_EEEE, OUTPUT);

pinMode(LIGHT1,OUTPUT);
pinMode(LIGHT2,OUTPUT);
pinMode(LIGHT3,OUTPUT);
pinMode(LIGHT4,OUTPUT);

digitalWrite(P_E,HIGH);
digitalWrite(P_EE,HIGH);
digitalWrite(P_EEE,HIGH);
digitalWrite(P_EEEE,HIGH);

digitalWrite(LIGHT1,HIGH);delay(1000);
digitalWrite(LIGHT2,HIGH);delay(1000);
digitalWrite(LIGHT3,HIGH);delay(1000);
digitalWrite(LIGHT4,HIGH);delay(1000);


lcd.print("IVRS Based Home");
lcd.setCursor(0,1);
lcd.print("Automation With");
delay (2000);

lcd.clear();
lcd.setCursor(0,0);
lcd.print("Immediate Voice ");
lcd.setCursor(0,1);
lcd.print("& SMS Feedback");
delay (2000);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Using Arduino ");
lcd.setCursor(0,1);
lcd.print("SIM800L DTMF");
delay (2000);
lcd.clear();

gsm_initilaize();
lcd.clear();
lcd.setCursor(0,0);
lcd.print("GSM TEST OK");
delay (2000);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("CALL TO SIM");
}

void loop()
{
String gsm_data; 
while(gsm_board.available())
{
char c=gsm_board.read();
gsm_data+=c;
delay(10);
} 
if(!call_flag) 
{
x=gsm_data.indexOf("RING");
if(x>-1)
{
delay(5000);
gsm_board.println("ATA");
Serial.println("ATA");
delay(1000);voice.say(sp2_ONE);voice.say(sp4_LIGHT);voice.say(sp2_ONE);voice.say(sp2_ON);
delay(1000);voice.say(sp2_TWO);voice.say(sp4_LIGHT);voice.say(sp2_ONE);voice.say(sp2_OFF);
delay(1000);voice.say(sp2_THREE);voice.say(sp4_LIGHT);voice.say(sp2_TWO);voice.say(sp2_ON);
delay(1000);voice.say(sp2_FOUR);voice.say(sp4_LIGHT);voice.say(sp2_TWO);voice.say(sp2_OFF);
delay(1000);voice.say(sp2_FIVE);voice.say(sp4_LIGHT);voice.say(sp2_THREE);voice.say(sp2_ON);
delay(1000);voice.say(sp2_SIX);voice.say(sp4_LIGHT);voice.say(sp2_THREE);voice.say(sp2_OFF);
delay(1000);voice.say(sp2_SEVEN);voice.say(sp4_LIGHT);voice.say(sp2_FOUR);voice.say(sp2_ON);
delay(1000);voice.say(sp2_EIGHT);voice.say(sp4_LIGHT);voice.say(sp2_FOUR);voice.say(sp2_OFF);
call_flag=1;
}
}  

if(call_flag) 
{
x=gsm_data.indexOf("DTMF"); 
if(x>-1)
{
n[j]=gsm_data[x+6];
Serial.println(n[j]);
relay_flag=1;
}
x=gsm_data.indexOf("NO CARRIER"); 
if(x>-1)
{
gsm_board.println("ATH");
relay_flag=1;
call_flag=0;
j=0;
}
}
if(relay_flag) 
{
relay();
}
}

void gsm_initilaize()
{
boolean gsm_Ready=1;
Serial.println("initializing GSM module");
while(gsm_Ready>0)
{
gsm_board.println("AT");
Serial.println("AT"); 
while(gsm_board.available())
{
if(gsm_board.find("OK")>0)
gsm_Ready=0;
}
delay(2000);
}
Serial.println("AT READY");
// GSM MODULE REPLIED 'OK' TO 'AT' INPUT, INDICAING THE MODULE IS OK AND FUNCTIONING
boolean ntw_Ready=1;
Serial.println("finding network");
while(ntw_Ready>0)
{
gsm_board.println("AT+CPIN?");
Serial.println("AT+CPIN?"); 
while(gsm_board.available())
{
if(gsm_board.find("+CPIN: READY")>0)
ntw_Ready=0;
}
delay(2000);
}
 Serial.println("NTW READY");

boolean DTMF_Ready=1;
Serial.println("turning DTMF ON");
while(DTMF_Ready>0)
{
gsm_board.println("AT+DDET=1");
Serial.println("AT+DDET=1"); 
while(gsm_board.available())
{
if(gsm_board.find("OK")>0)
DTMF_Ready=0;
}
delay(2000);
}
Serial.println("DTMF READY");

void relay()
{

if(n[0]=='1')
{
digitalWrite(LIGHT1,LOW);

digitalWrite(P_E,LOW);
delay(5000);
digitalWrite(P_E,HIGH);

Serial.println("LIGHT1 ON");lcd.clear();lcd.setCursor(0,0);lcd.print("LIGHT1 ON");lcd.clear();
lcd.setCursor(0,0);lcd.print("PRESS BUTTON");lcd.setCursor(5,1);lcd.print("LIGHT1 ON");
}

else if(n[0]=='2')
{
digitalWrite(LIGHT1,HIGH);

digitalWrite(P_EE,LOW);
delay(5000);
digitalWrite(P_EE,HIGH);
  
Serial.println("LIGHT1 OFF");lcd.clear();lcd.setCursor(0,0);lcd.print("LIGHT1 OFF");lcd.clear();
lcd.setCursor(0,0);lcd.print("PRESS BUTTON");lcd.setCursor(5,1);lcd.print("LIGHT1 OFF");
}

if(n[0]=='3')
{
digitalWrite(LIGHT2,LOW);

digitalWrite(P_EEE,LOW);
delay(5000);
digitalWrite(P_EEE,HIGH);
  
Serial.println("LIGHT2 ON");lcd.clear();lcd.setCursor(0,0);lcd.print("LIGHT2 ON");lcd.clear();
lcd.setCursor(0,0);lcd.print("PRESS BUTTON");lcd.setCursor(5,1);lcd.print("LIGHT2 ON");
}

else if(n[0]=='4')
{
digitalWrite(LIGHT2,HIGH);

digitalWrite(P_EEEE,LOW);
delay(5000);
digitalWrite(P_EEEE,HIGH);
  
Serial.println("LIGHT2 OFF");lcd.clear();lcd.setCursor(0,0);lcd.print("LIGHT2 OFF");lcd.clear();
lcd.setCursor(0,0);lcd.print("PRESS BUTTON");lcd.setCursor(5,1);lcd.print("LIGHT2 OFF");
}
relay_flag=0;
}

Project Photo