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Visitor Counter

This Arduino project will automate the lights of the room and also count the person in the rooms 

it also have self-intelligence that if there is no body in the room it will turn of the light
for example if 3 person enters the room then three person should exit also to turn the lights off

  Material needed:-
  • Arduino board
  • 2 IR sensor 
    IR sensor
  • Jumper wire
  • Chassis (optional) 


Connect the IR sensor output on pin 14&19 (I am using Arduino Mega that's why I have connected  it to 14&19 you can change it as your needs in the program)

and the connect led or Relay module on pin 2 (you can change this also as per your need)

Then upload the code 
#define in 14//defining the in sensor
#define out 19//defining the out sensor 
#define led 2//you can connect led module also
int count=0;


void IN()
{
    count++;
    Serial.print("Person In Room:");                  //it will print 
    Serial.println(count);                            //+1 if a person enter in the room
    delay(1000);
}


void OUT()
{
  count--;
    Serial.print("Person In Room:");           //it will print 
    Serial.println(count);                    //-1 if a person exit out the room
}
void setup()
{
  Serial.begin(9600);                      //start Serial moniter
  
  Serial.println("Visitor Counter");     //print the title of te project
  delay(2000);                          //as serial moniter starts
  
  pinMode(in, INPUT);                 //describe the
  pinMode(out, INPUT);               //pins 
  pinMode(led, OUTPUT);             //as OUTPUT or INPUT
  
  Serial.print("Person In Room:");//it will first
  Serial.println(count);         //print the 0 number of member
}
void loop()
{  
  
  if(digitalRead(in))       //it works very
  IN();                    //simply if anybody 
  if(digitalRead(out))    //enters the room it will +1
  OUT();                 //and if anybody exit it -1
  
  if(count<=0)         //if there is anybody is in the room
  {
    digitalWrite(led, LOW);//the led will light up  
    delay(200);
  }
  
  else                          //and if nobody in the room 
  {
      digitalWrite(led, HIGH);//led will be turned off
  }
}         

It will look like this 
         

.Now use Chassis to make it look good



keep it at the door and use the automated light and visitor counter

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