VISITOR COUNTER WITH AUTOMATIC LIGHTING

Introduction

In this project “Visitor Counter With Automatic Lighting“, we’ll combine the functionality of an Arduino microcontroller, a 16*2 LCD display, and an IR sensor to create a visitor counter system with automatic lighting. The system will count the number of visitors passing through a specific area while automatically illuminating the room using LEDs if there is at least 1 person in the room.

Bill Of Materials

Block Diagram

Here’s an explanation of the block diagram for the Visitor Counter with Automatic Lighting system using Arduino, a 16*2 LCD, and an IR sensor:

• The IR sensor detects the presence of visitors passing by.
• Upon detection, the Arduino increments the visitor count and updates the LCD display to reflect the new count.
• Simultaneously, the Arduino triggers the relay module to activate the lighting source providing illumination in the area.
• After a brief delay, the system is ready to detect the next visitor, ensuring accurate counting and efficient lighting control.

PCB Manufacturer

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Circuit Diagram

Here’s the circuit diagram for your project:

• The IR sensor modules are connected to analog pins A3 and A2 of the Arduino for their data pins.
• The LCD display is connected to the I2C pins of the Arduino (SDA to A4, SCL to A5).
• The LED is connected to digital pin 12 (D12) through a resistor to limit the current.

Program or Source Code

int count = 0;
float t1, t2, tf;
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);
void setup() {
  // put your setup code here, to run once:
  pinMode(2, INPUT);
  pinMode(3, INPUT);
  pinMode(12, OUTPUT);
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Automatic Light ");
  lcd.setCursor(0, 1);
  lcd.print("& visitorCounter");
  delay(2000);
  lcd.clear();

}

void loop() {
  // put your main code here, to run repeatedly:

  if (digitalRead(2) == 1)
  {
    t1 = millis() / 1000;
    delay(50);
  }
  if (digitalRead(3) == 1)
  {
    t2 = millis() / 1000;
    delay(50);
  }

  // Serial.print(t1);
  // Serial.print(",");
  //Serial.println(t2);

  if ((t1 == 0) && (t2 == 0))
  {
    Serial.print("");
  }
  else
  {
    tf = t1 - t2;
    if (tf > 0)
    {
      Serial.println("person out");
      lcd.setCursor(0, 0);
      lcd.print("person out");
      count--;
      if(count<=0)
      {
        count=0;
      }
      Serial.print("count:");
      Serial.println(count);
      lcd.setCursor(0, 1);
      lcd.print("count:");
      lcd.print(count);
      if (count < 10)
      {
        lcd.setCursor(7, 1);
        lcd.print(" ");
      }
    }
    else if (tf < 0)
    {
      Serial.println("person in");
      lcd.setCursor(0, 0);
      lcd.print("person in ");
      count++;
      Serial.print("count:");
      Serial.println(count);
      lcd.setCursor(0, 1);
      lcd.print("count:");
      lcd.print(count);
      if (count < 10)
      {
        lcd.setCursor(7, 1);
        lcd.print(" ");
      }
    }
    delay(1000);

  }
  t1 = 0;
  t2 = 0;

  if (count != 0)
  {
    digitalWrite(12, HIGH);

  }
  else
  {
    digitalWrite(12, LOW);

  }


}

Connection Diagram

Manufacturing Files

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Conclusion

In conclusion, a visitor counter with automatic lighting offers a host of benefits ranging from energy efficiency and convenience to enhanced security and data-driven insights. With careful planning, implementation, and ongoing maintenance, this system can significantly enhance the functionality and user experience of various indoor environments while promoting sustainability and efficiency.