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Smart Social Badge
A wearable that flashes the same light as a nearby stranger who shares your interests.
Project Overview
A pair of necklaces that flash the same light when someone with shared interests comes near — so you spend more time with people you actually click with. Bluetooth proximity detection does the sensing; a tag-matching algorithm decides the color.
The system pairs with a WeChat mini-program for profile and history, and exchanges contacts over NFC or QR. Built on TuyaOpen as a wearable that bridges online profiling with offline meeting.

Features
- Multi-category tag system (professional, interests, personality, unique traits)
- Bluetooth proximity detection and communication
- Color-coded light signals for different tag matches
- WeChat mini-program integration
- NFC and QR code information exchange
- Personalized greeting message generation
- Social interaction tracking and history
Technology Stack
- TuyaOpen Framework: Complete AIoT development platform for wearable devices with cloud AI
- Hardware: 2.4G low-power Bluetooth, wearable device antenna design
- Software: Uniapp, mini-program development, BLE protocol stack with cloud connectivity
- User Tag Profiling: User profiling and matching algorithms through TuyaOpen
- Design: Multi-color 3D printing, fashion accessory design
- Embedded: Circuit schematic design, FreeRTOS communication software with cloud integration
- Manufacturing: PCB processing, product manufacturability design
Quick Start
- Set up the mini-program development environment
- Configure Bluetooth hardware and firmware
- Implement tag matching algorithms
- Design the necklace hardware and casing
- Develop the WeChat mini-program interface
- Test proximity detection and communication
- Deploy and test in social environments
Copyright & License
This project was developed as part of Adventure X 2025 Hangzhou Hackathon. The project and all its components are owned by the participating team members and contest participants. All rights reserved.