Smart Health Monitoring Wristband

A fully engineered embedded system that goes beyond simple monitoring — it provides a real-time, automated safety response by tracking heart rate & SpO₂ (MAX30102), detecting harmful gases (MQ-2) and falls (MPU-6050), instantly alerting the user with LEDs, vibration & buzzer, and — the real game-changer — automatically sending an SMS and placing a phone call from the user’s phone to ensure help arrives when every second matters.

Engineering Highlights:

Microcontroller: Implemented on ATmega32 for reliable, low-level control — chosen for its excellent balance of performance, affordability, and compatibility with our system requirements

Programming Language: Firmware written in Embedded C

Firmware Development: Compiled & optimized in Atmel Studio for real-time performance

Simulation: Verified functionality in Proteus before hardware integration

Mobile Application: Designed and developed a custom Android app using Android Studio for Bluetooth connectivity & automated alerting

Mechanical Design: Modeled the wristband casing in Fusion 360 and 3D printed it

Testing: Fully integrated and stress-tested in real-world scenarios to guarantee reliability

Key Challenges Solved:

⚡ Resolved I2C conflicts between MAX30102 & MPU-6050 using software SDA/SCL

⚡ Replaced power-hungry SIM module with a Bluetooth + phone network approach

⚡ Tuned Bluetooth stability and minimized false alerts

⚡ Achieved a compact, power-efficient 3D-printed design