How to Build a Bidirectional Counter Using Arduino and IR Sensors
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Learn how to build a bidirectional counter using Arduino and IR sensors to track object movement in both directions.
How to Build a Bidirectional Counter Using Arduino and IR Sensors
- 1. Bidirectional Visitor Counter using Arduino Author Yogeshwaran
- 2. Build a Bidirectional Counter Using Arduino and IR Sensors An RFID (Radio Frequency Identification) door lock system allows access control using RFID cards or tags. When an authorized tag is scanned, the door unlocks, and for unauthorized tags, access is denied. This system is commonly used in homes, offices, and restricted areas to enhance security.
- 3. Understanding the Bidirectional Counter A bidirectional counter tracks movement in both directions using two IR sensors. When an object or person moves past both sensors in a specific order, the system determines the direction and updates the count accordingly. The working principle relies on detecting which IR sensor is triggered first to determine whether the count increases or decreases.
- 4. Components Needed for the Project The key components for building this project include: Arduino Uno – Controls the counting logic. Two IR Sensors – Detect movement and direction. 16x2 LCD with I2C Module – Displays the count. Resistors, Wires, and Power Supply – For proper circuit operation. Each component plays a crucial role in ensuring accurate bidirectional counting. Once these components are gathered, the next step is wiring them together following the circuit diagram.
- 5. Connecting the Components The IR sensors are placed in sequence at a fixed distance. When an object moves past the sensors, they send signals to the Arduino. The LCD is connected via the I2C interface for displaying the count. The circuit is powered using a 5V supply from the Arduino board.
- 6. Code Overview The Arduino code performs the following tasks: Detects IR sensor signals using interrupts. Determines movement direction based on which sensor is triggered first. Updates the count accordingly and displays it on the LCD. The LCD updates dynamically with the latest count.
- 7. For a more in-depth tutorial, check out this article: https://circuitdigest.com/microcontroll er-projects/how-to-build-a- bidirectional-counter-using-arduino- and-ir-sensors www.circuitdigest.com Robotics Projects|Arduino Projects|Raspberry Pi Projects| ESP32 Projects | AI Projects | IoT Projects