Arduino Code:

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Code:

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
 
#define SCREEN_WIDTH 128    // OLED display width, in pixels
#define SCREEN_HEIGHT 64    // OLED display height, in pixels
#define OLED_RESET -1       // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);


//Defining the pins used 
#define IR1 5
#define IR2 6
 
int inStatus;
int outStatus;
 
int countin = 0;
int countout = 0;
 
int in;
int out;
int now;
 
 
void setup()
{
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C); //initialize with the I2C addr 0x3C (128x64)
  delay(2000);
  pinMode(IR1, INPUT);        //Declaring IR sensor 1 at pin 5 as input device
  pinMode(IR2, INPUT);        //Declaring IR sensor 2 at pin 6 as input device
  
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(WHITE);
  display.setCursor(20, 20);
  display.print("Visitor");
  display.setCursor(20, 40);
  display.print("Counter");
  display.display();
  delay(3000);
}
 
void loop()
{
  inStatus =  digitalRead(IR1);
  outStatus = digitalRead(IR2);
  if (inStatus == 0)
  {
    in = countin++;
  }
 
  if (outStatus == 0)
  {
    out = countout++;
  }
 
  now = in - out;
 
  if (now <= 0) { display.clearDisplay(); display.setTextSize(2); display.setTextColor(WHITE); display.setCursor(0, 15); display.print("No Visitor"); display.display(); display.print(now); delay(1000); } else if (now >= 1)
  {
    display.clearDisplay();
    display.setTextColor(WHITE);
 
    display.setTextSize(1);
    display.setCursor(15, 0);
    display.print("Current Visitor");
    display.setTextSize(2);
    display.setCursor(50, 15);
    display.print(now);
 
    display.setTextSize(1);
    display.setCursor(0, 40);
    display.print("IN: ");
    display.print(in);
 
    display.setTextSize(1);
    display.setCursor(70, 40);
    display.print("OUT: ");
    display.print(out);
 
    display.display();
    display.print(now);
    delay(1000);
  }
}