#include <LiquidCrystal.h>
LiquidCrystal lcd(2,3,4,5,6,7);

const int ir1 =  A0; 
const int ir2 =  A1;
const int ir3 =  A2;
const int ir4 =  A3;
const int Sound = A4;

const int Relay1 = 8;
const int Relay2 = 9;
const int Relay3 = 10;
const int Relay4 = 11; 

int ir_flag1 = 0,ir_flag2 = 0,ir_flag3 = 0,ir_flag4 = 0,ir_flag5 = 0;
long acc_x_avg=0;
int acc_x;
void function_dispaly()
{
  lcd.setCursor(0,0);   lcd.print("D1:"); 
  lcd.setCursor(8,0);   lcd.print("D2:"); 
  lcd.setCursor(0,1);   lcd.print("D3:");
  lcd.setCursor(8,1);   lcd.print("D4:");
}

void ir_function()
{
//------------------------------------------------  
  if(digitalRead(ir1)==LOW)
    {
      if(ir_flag1 == 0)
      {
        digitalWrite(Relay1,HIGH);
        ir_flag1 = 1;
        lcd.setCursor(3,0);lcd.print("ON  ");
      }
      else if(ir_flag1 == 1)
      {
        digitalWrite(Relay1,LOW);
        ir_flag1 = 0;
        lcd.setCursor(3,0);lcd.print("OFF ");
      }
      while(digitalRead(ir1)==LOW){}
    }

//------------------------------------------------  
  if(digitalRead(ir2)==LOW)
    {
      if(ir_flag2 == 0)
      {
        digitalWrite(Relay2,HIGH);
        ir_flag2 = 1;
        lcd.setCursor(11,0);lcd.print("ON  ");
      }
      else if(ir_flag2 == 1)
      {
        digitalWrite(Relay2,LOW);
        ir_flag2 = 0;
        lcd.setCursor(11,0);lcd.print("OFF ");
      }
      while(digitalRead(ir2)==LOW){}
    }

//------------------------------------------------  
  if(digitalRead(ir3)==LOW)
    {
      if(ir_flag3 == 0)
      {
        digitalWrite(Relay3,HIGH);
        ir_flag3 = 1;
        lcd.setCursor(3,1);lcd.print("ON  ");
      }
      else if(ir_flag3 == 1)
      {
        digitalWrite(Relay3,LOW);
        ir_flag3 = 0;
        lcd.setCursor(3,1);lcd.print("OFF ");
      }
      while(digitalRead(ir3)==LOW){}
    }

//------------------------------------------------  
  if(digitalRead(ir4)==LOW)
    {
      if(ir_flag4 == 0)
      {
        digitalWrite(Relay4,HIGH);
        ir_flag4 = 1;
        lcd.setCursor(11,1);lcd.print("ON  ");
      }
      else if(ir_flag4 == 1)
      {
        digitalWrite(Relay4,LOW);
        ir_flag4 = 0;
        lcd.setCursor(11,1);lcd.print("OFF ");
      }
      while(digitalRead(ir4)==LOW){}
    }            
}
void setup() 
{
  Serial.begin(9600);
  lcd.begin(16,2);
  pinMode(ir1,INPUT_PULLUP);pinMode(ir2,INPUT_PULLUP);
  pinMode(ir3,INPUT_PULLUP);pinMode(ir4,INPUT_PULLUP);
  pinMode(Sound,INPUT_PULLUP);
  pinMode(Relay1,OUTPUT);pinMode(Relay2,OUTPUT);
  pinMode(Relay3,OUTPUT);pinMode(Relay4,OUTPUT);
  digitalWrite(Relay1,LOW);digitalWrite(Relay2,LOW);
  digitalWrite(Relay3,LOW);digitalWrite(Relay4,LOW);
  lcd.setCursor(0,0);   
  lcd.print("    Automatic   "); //Automatic Contactless Switch For Smart Home
  lcd.setCursor(0,1);    
  lcd.print("  Contactless   ");
  delay(2000);
  lcd.setCursor(0,0);   
  lcd.print("Switch for Smart"); //Automatic Contactless Switch For Smart Home
  lcd.setCursor(0,1);    
  lcd.print("     HOME       ");
  delay(2000);
  lcd.clear();
  lcd.setCursor(0,0);   
  lcd.print("D1:OFF  D2:OFF  "); 
  lcd.setCursor(0,1);    
  lcd.print("D4:OFF  D4:OFF  ");
}

void loop() 
{
 function_dispaly();
 ir_function();
 //------------------------------------------------------
  
 // /*acc_x_avg=0;
  //for(int i=1;i<=50;i++)
  //{
  //  acc_x = analogRead(Sound);    
  //  acc_x_avg+=acc_x;
 // }
 // acc_x = acc_x_avg/100;
 // Serial.print("Acc. Values : ");Serial.print(acc_x);Serial.println("     ");
 // */
  if(digitalRead(Sound)==LOW)  // Change this Value check serial monitor 
    {
      if(ir_flag5 == 0)
      {
        digitalWrite(Relay1,HIGH);digitalWrite(Relay2,HIGH);
        digitalWrite(Relay3,HIGH);digitalWrite(Relay4,HIGH);
        ir_flag1 = 1;ir_flag2 = 1;ir_flag3 = 1;ir_flag4 = 1;ir_flag5 = 1;
        lcd.setCursor(3,0);lcd.print("ON  ");lcd.setCursor(11,0);lcd.print("ON  ");
        lcd.setCursor(3,1);lcd.print("ON  ");lcd.setCursor(11,1);lcd.print("ON  ");
      }
      else if(ir_flag5 == 1)
      {
        digitalWrite(Relay1,LOW);digitalWrite(Relay2,LOW);
        digitalWrite(Relay3,LOW);digitalWrite(Relay4,LOW);
        ir_flag1 = 0;ir_flag2 = 0;ir_flag3 = 0;ir_flag4 = 0;ir_flag5 = 0;
        lcd.setCursor(3,0);lcd.print("OFF ");lcd.setCursor(11,0);lcd.print("OFF ");
        lcd.setCursor(3,1);lcd.print("OFF ");lcd.setCursor(11,1);lcd.print("OFF ");
      }
      while(digitalRead(Sound)==LOW)
      {
       //acc_x_avg=0;
       //for(int i=1;i<=50;i++)
       //{
       // acc_x = analogRead(Sound);    
       // acc_x_avg+=acc_x;
       //}
        //acc_x = acc_x_avg/100;
        //Serial.print("Acc. Values : ");Serial.print(acc_x);Serial.println("     "); 
      }
    }
  
}