Low-Cost Arduino-Based Counter System

A useful tool for counting the number of persons entering or exiting a room is an automated counter system.The goal of this research is to present a novel approach that can count people automatically. With the aid of ATmega328P internal code, it intelligently determines and counts the number of individuals. The number of obstacles that pass in front of the IR sensor in a single direction is counted in this project. A 16x2 LCD display module shows the count number or the total counts value. The module consists of an IR LED emitter and an IR photodiode detector. In this project, we are utilizing an active infrared sensor. It produces a high output when it detects an object inside its detection range, and a low output otherwise. Rotating the built-in trim pot will also change the sensor's range. When something moves in front of it, the count starts at zero and increases by one.