Shop Counter: Customer Entry Exit Counting System

Customer footfall data is invaluable for Indian retail shops, helping optimise staffing, marketing spend, and store layout. Commercial people counters cost ₹15,000-50,000, but a DIY system using IR or ultrasonic sensors costs under ₹1,500 and provides the same accuracy.

Why Count Customers

This aspect of the shop counter project requires careful attention to detail for reliable long-term operation. Indian makers have found innovative solutions to the challenges posed by local conditions, from voltage regulators that handle 180-260V input swings to conformal coating that protects circuit boards from monsoon humidity.

Key consideration: Two IR break beam sensors 30cm apart detect direction of movement

Testing thoroughly before permanent installation saves significant time and frustration. Set up the complete system on a breadboard or test bench first, simulate all trigger conditions, and verify that alerts are sent correctly. Only then proceed with permanent mounting and wiring.

The Indian maker community forums and YouTube channels are excellent resources for troubleshooting specific issues. Many builders share their experiences with local component sourcing, alternative parts, and adaptation tips for Indian conditions.

IR Beam Break Sensor Method

This aspect of the shop counter project requires careful attention to detail for reliable long-term operation. Indian makers have found innovative solutions to the challenges posed by local conditions, from voltage regulators that handle 180-260V input swings to conformal coating that protects circuit boards from monsoon humidity.

Key consideration: HC-SR04 ultrasonic sensor alternative for wider doorways

Testing thoroughly before permanent installation saves significant time and frustration. Set up the complete system on a breadboard or test bench first, simulate all trigger conditions, and verify that alerts are sent correctly. Only then proceed with permanent mounting and wiring.

The Indian maker community forums and YouTube channels are excellent resources for troubleshooting specific issues. Many builders share their experiences with local component sourcing, alternative parts, and adaptation tips for Indian conditions.

Ultrasonic Dual-Sensor Approach

A well-designed interface makes the difference between a shop counter that gets used daily and one that gets forgotten. The dashboard provides at-a-glance status of all sensors, zones, and alerts.

For local display, a 16×2 LCD or 0.96-inch OLED screen shows real-time status. For remote access, a web dashboard built with HTML/CSS served by the ESP32 provides full control from any browser. Node-RED running on a Raspberry Pi offers the most powerful dashboarding option with drag-and-drop widget design.

Mobile access through Blynk or Telegram bots gives you on-the-go monitoring. Blynk’s free tier supports one device with basic widgets – sufficient for most home security projects.

Direction Detection Algorithm

The software for this shop counter is written in Arduino C/C++ and can be uploaded using the Arduino IDE. The code is structured in modular functions for easy understanding and modification.

Key programming concepts used in this project include interrupt-driven sensor reading for real-time response, non-blocking delays using millis() for multitasking, and EEPROM storage for persistent settings that survive power cycles.

Implementation detail: Entry counted when sensors triggered in sequence A then B; exit when B then A

Display and Logging

A well-designed interface makes the difference between a shop counter that gets used daily and one that gets forgotten. The dashboard provides at-a-glance status of all sensors, zones, and alerts.

For local display, a 16×2 LCD or 0.96-inch OLED screen shows real-time status. For remote access, a web dashboard built with HTML/CSS served by the ESP32 provides full control from any browser. Node-RED running on a Raspberry Pi offers the most powerful dashboarding option with drag-and-drop widget design.

Mobile access through Blynk or Telegram bots gives you on-the-go monitoring. Blynk’s free tier supports one device with basic widgets – sufficient for most home security projects.

Daily and Hourly Analytics

This aspect of the shop counter project requires careful attention to detail for reliable long-term operation. Indian makers have found innovative solutions to the challenges posed by local conditions, from voltage regulators that handle 180-260V input swings to conformal coating that protects circuit boards from monsoon humidity.

Key consideration: Real-time occupancy useful for COVID-appropriate capacity management

Testing thoroughly before permanent installation saves significant time and frustration. Set up the complete system on a breadboard or test bench first, simulate all trigger conditions, and verify that alerts are sent correctly. Only then proceed with permanent mounting and wiring.

The Indian maker community forums and YouTube channels are excellent resources for troubleshooting specific issues. Many builders share their experiences with local component sourcing, alternative parts, and adaptation tips for Indian conditions.

Multi-Door Support

A multi-zone shop counter divides your property into distinct monitored areas, each with its own sensors and alert settings. This approach provides precise information about where an event occurred, enabling faster and more appropriate response.

For a typical Indian property, define zones based on security priority: Entry zone (main gate, front door), perimeter zone (boundary walls, windows), internal zone (hallways, living areas), and sensitive zone (locker room, server room). Each zone can have different arm/disarm schedules and alert priorities.

ESP-NOW protocol allows multiple ESP32 sensor nodes to communicate wirelessly without a WiFi router, creating a mesh network that covers large properties. Range between nodes is 200+ metres in open space, sufficient for most residential and commercial properties in India.

Frequently Asked Questions