Home Automation Using QR Codes

Introduction

• New method to control home appliances by scanning QR codes.
• Concept can extend beyond home automation.
• Encourages learning new concepts for broader applications.

Hardware Components

• Utilizes existing home automation projects with ESP8266 and ESP32 boards.
• Custom PCBs can be ordered using existing designs; sponsored by JLCPCB.
• Quick delivery options available for custom PCBs.

Arduino Code Overview

• Code named "QR Home Automation".
• Compatible with both ESP8266 and ESP32 boards.
• Defines pin numbers for relay connections.
• Requires Wi-Fi SSID and password for local network operation.
• No need for guests to manually enter Wi-Fi credentials.

Server and Networking

• Small web page displays control buttons for relays (4 buttons for 4 relays).
• Local server enabled on ESP32 board.
• Utilizes mDNS for local network access without IP address memorization.
• Device accessed via "esp.local" instead of IP address.

Functionality

• Functions control relays based on URL requests (e.g., /led1/on).
• Toggle function implemented for on/off requests.
• Server processes requests and manages relay states.

QR Code Creation

• Use QR Code Monkey website to create QR codes.
• QR code contains HTTP URL for appliance control.
• Example: URL format - http://esp.local/led1/toggle.
• QR codes can be customized with colors, icons, and design.
• Separate QR codes for Wi-Fi connection.

Implementation and Visualization

• QR codes placed near switchboards and appliances.
• Demonstrated for automatic Wi-Fi connection and appliance control.
• Visualization shows seamless interaction with home devices.

Feedback and Improvements

• Open for feedback on concept usefulness and interest.
• Suggested improvement: Use NFC instead of QR codes for quicker interaction.
• Encourages sharing ideas for improved interaction methods.

Conclusion

• Novel approach to appliance control using QR codes.
• No apps or installations required, just a smartphone.
• Project encourages innovation and idea sharing in home automation.