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Smart Supermarket Project

This is a full simulated MQTT smart supermarket system based on your group plan.

Modules

pip install paho-mqtt tabulate

python run_all_programs.py

This project demonstrates a simple smart supermarket queue management system using MQTT for real-time communication.

Queue Publisher: Simulates and publishes the current queue size to an MQTT broker.
Queue Subscriber: Listens for queue size updates and alerts staff if the queue exceeds a set threshold.
Dashboard: Visualizes queue size and is designed to be modular, allowing easy addition of new features.

The publisher script generates a random queue size and sends it to the MQTT topic supermarket/queue/size.
The subscriber script receives these updates and prints the queue size. If the queue size is greater than 5, it alerts staff to open a new checkout aisle.
The dashboard displays the current queue size and can be extended to show other features (e.g., temperature, stock, etc.) by registering new features in the code.

central_controller.py: Main integration point, simulates and publishes queue size (and other features in future).
queue_subscriber.py: Subscribes to queue size updates and triggers alerts.
dashboard.py: Modular dashboard for visualizing queue size and other features.

To add a new feature:

Use register_feature() in dashboard.py to register a new feature with its MQTT topic, label, and position.
Update the on_message function to handle the new topic and update the state.
Optionally, provide a custom update function for advanced label behavior (e.g., color changes).

This modular approach makes it easy to add or remove features as needed.