Balance Bracelet

This project introduces a cost-effective, wearable solution for managing physiological stress through coherent breathing—a technique involving synchronized 6-second inhalation and exhalation cycles. Our device, the Balance Bracelet, guides users to physiological coherence using PPG sensors, haptic feedback, and a real-time breathing assistant. The system not only empowers individual stress management but offers clinical relevance for broader mental health applications. The project encompasses a complete pipeline from hardware prototyping and physiological signal analysis to deep learning–based stress classification and web-based biofeedback integration.

🏆 1st Place – Project Presentation Award

Introduction

Modern life has escalated chronic stress levels, with adults aged 35–44 being severely affected. Current solutions—medication, therapy, and generic wearables—are either inaccessible or not personalized for breathing-based interventions.

Coherent breathing has shown potential to:

Enhance heart rate variability (HRV)
Improve autonomic nervous balance
Reduce anxiety, depression, and cardiovascular risks

Objective

Design and develop a non-invasive, user-friendly wearable that guides users through coherent breathing and quantifies physiological coherence using real-time HRV and respiratory rate monitoring.

System Design and Architecture

Hardware Architecture

Processor: Arduino Mega
Sensors: Dual Gravity PPG sensors for HRV and HR
Actuators: Vibration motor for haptic feedback
Display: OLED screen for real-time coherence status
Connectivity: Wi-Fi + BLE for mobile/web integration

Pitch

CAD

bracelet

Paper

References

Source code

Group members

Sainath Polisetty, Tejaswini Walunjkar, Manish Peteri, Ruthwik Ahlada

Jay Menon