Smart Home Automation & Security System 🏠

Overview

This project implements a complete smart home automation and security system integrating multiple sensors, actuators, and a web application. The smart home system comprises three Raspberry Pi units, each interfaced with different sensors and actuators.

System Architecture & Technology Stack

The smart home system consists of three Raspberry Pi devices, each responsible for different sensors and actuators.

Communication & Data Flow:

• Raspberry Pi devices send sensor and actuator data via MQTT protocol to a Flask-based server for storage in InfluxDB and visualization in Grafana.
• Web application interfaces allow users to monitor sensor readings, control actuators, and view historical data.
• Each sensor and actuator can operate in simulated or real mode, which can be configured in the settings.json file.

Technology Stack:

• Programming & Server: Python, Flask
• Communication: MQTT
• Database: InfluxDB
• Visualization: Grafana
• Web Application: React

Hardware: Raspberry Pi, GPIO sensors and actuators

Features

Security & Motion Detection

• When DPIR1 detects motion, DL1 is turned on for 10 seconds.
• When DPIR1 detects motion, determine whether a person is entering or exiting the building based on the distance measured by DUS1 in the previous few seconds.
• Same logic for DPIR2 and DUS2 as written above
• Maintain and update the real-time count of occupants inside the building.
• If a signal from DS1 or DS2 is detected for more than 5 seconds, activate the ALARM until the DS state changes. This simulates an unlocked door.
• Enable activation of the security alarm via the DMS component.
• When a 4-digit PIN code is entered, the system activates after 10 seconds.
• If the system is active, trigger the ALARM when a signal is detected on DS1 or DS2, unless the correct PIN is entered via the DMS component.
• Entering the PIN deactivates the ALARM and disarms the system.
• If the number of people inside the building (as per point 2) is zero, trigger the ALARM when motion is detected by any of the RPIR1-3 sensors.
• If the GSG (attached to the Slava icon) detects significant movement, trigger the ALARM.

Environmental Monitoring

• Display the temperature and humidity from DHT1-3 on the LCD, cycling through the readings from each DHT sensor every few seconds.

Kitchen Timer

• Enable kitchen timer settings.
• Allow the timer duration to be set via the web application. Display the time on the 4-digit 7-segment (4SD) display.
• Allow pressing the button (BTN) to add N seconds to the timer. N is the number of seconds configured via the web application.
• When the timer expires, the 4SD display should blink showing 00:00. Pressing the button (BTN) stops the blinking.

Lighting Control

• Enable turning the BRGB light on/off and controlling its colors via the remote control and IR sensor, as well as through the web application.

Camera

• Display the webcam video on the web application.

How to run?

1. Clone the repository
   • git clone https://github.com/natasakasikovic/smart-home.git
   • cd smart-home
2. Start Docker services (terminal docker)
   • cd docker
   • docker compose up -d
3. Run Raspberry Pi simulators (in separate terminals)
   • python main.py PI1
   • python main.py PI2
   • python main.py PI3
4. Start the server (terminal server)
   • python -m server.server
5. Start the frontend (terminal frontend)
   • cd frontend
   • npm install
   • npm run dev