Tuesday, 11 March 2025

How to Build a Bidirectional Visitor Counter using Arduino

How-to-Build-a-Bidirectional-Counter-Using-Arduino-and-IR-Sensors
What is a Bidirectional Counter?

A bidirectional counter counts objects or people moving in two directions, incrementing the count for one direction and decrementing for the opposite. It is commonly used in:

  • Automatic door entry systems
  • Visitor counters in malls, offices, and stations
  • Industrial conveyor belt monitoring

Components Required

To build this project, you'll need:

  • Arduino Uno
  • IR Sensors (2x)
  • 7-Segment Display or LCD
  • Resistors & Capacitors
  • Jumper Wires & Breadboard
Hardware-Connection-of-Bidirectional-Counter-System-using-IR-Sensors (1)


This project demonstrates how to use the L298N Motor Driver Module with Arduino to control the speed and direction of a DC motor. By leveraging PWM (Pulse Width Modulation) signals, you can achieve precise motion control, making it ideal for robotics, automation, and motorized systems. Whether you're a beginner or an advanced maker, this tutorial will help you understand motor control concepts and apply them to your own projects.

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