Project Hub /Healthcare Biomedical & Assistive/Pulse Oximeter & Vital Scanner/Smart Life Band: An IoT-Based Health, Sleep, and Safety Monitoring Wearable

Smart Life Band: An IoT-Based Health, Sleep, and Safety Monitoring Wearable

Intermediate

ESP32

₹1,500 – ₹5,000

3 – 6 Hours

Partial Kit

Smart Life Band: An IoT-Based Health, Sleep, and Safety Monitoring Wearable

An IoT-based wearable smart band that monitors vital health parameters like heart rate, SpO₂, movement, stress, and sleep state, featuring real-time Firebase cloud syncing and an emergency SOS button.

Originally published on CircuitDigest

View original tutorial

Parts You'll Need

This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.

MPU6050 - Triple Axis Accelerometer + Gyroscope Module Rs. 438.00
0.96 Inch I2C/IIC 4pin OLED Display Module White Rs. 349.00
2-Slot 18650 Holder with Protective Cover and On/Off Switch – Case Rs. 109.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

We don't carry yet: Pulse / Heart Rate Sensor
Perfboard / Veroboard / Stripboard
SpO₂ Sensor

Browse all components

How It Works

The Smart Life Band is an IoT-based wearable device built around the ESP32 DevKit v1 microcontroller, designed to monitor health and safety metrics in real-time. At the core of its vital-scanning system is the MAXREFDES117 sensor, which uses optical photoplethysmography (PPG) to measure heart rate and blood oxygen saturation (SpO₂). Simultaneously, the MPU6050 accelerometer and gyroscope track physical movement, orientation, and activity levels, which helps evaluate sleep states and everyday motion. Users can interact with the wearable locally using a push button and view real-time data on the 0.96-inch I2C OLED display driven by the SSD1306 controller. All the collected health and motion data are processed by the ESP32, which utilizes its onboard WiFi capabilities to transmit the telemetry securely to a Firebase cloud database. This allows remote tracking and data logging via the Firebase JS SDK. Additionally, pressing the physical push button triggers an emergency safety feature, allowing the wearable to send an instant SOS signal over the internet.

Why Build This

Gain practical experience building a functional Internet of Things (IoT) wearable device suitable for remote health and patient monitoring.

Learn how to integrate multiple digital sensors over a shared communication bus and sync physical sensor data to a cloud database.

Understand how to design a personal safety and vital-scanning prototype using microcontrollers for school-level science fairs or engineering portfolios.

Real-World Application

Remote patient monitoring, elderly care, personal safety devices, and fitness tracking systems.

Skills You'll Learn

I2C communication protocol

sensor data acquisition

cloud database integration

wireless data transmission via Wi-Fi

microcontroller GPIO management

wearable electronics prototyping

Safety Precautions

Ensure proper wiring of I2C lines and power connections. Since this is a wearable prototype powered via USB or a safe voltage source, avoid exposing electrical connections directly to bare skin.

Technology Tags

ESP32

IOT

FIREBASE FIRESTORE

MAXREFDES117

MPU6050

OLED

I2C

WEARABLE

JAVASCRIPT

WEB DASHBOARD

WHATSAPP INTEGRATION

Frequently Asked Questions

Can I power this wearable health band with a standard lithium battery?

Yes, although the project is prototyped using a safe USB voltage source or development board power, you can use a regulated battery source suitable for the ESP32 as long as electrical connections are insulated from bare skin.

How does the ESP32 send data to the cloud without a physical cable?

The ESP32 DevKit v1 features built-in Wi-Fi, allowing the microcontroller to connect to a local wireless network and securely push sensor metrics directly to Firebase using the provided software libraries.

What is the purpose of the 0.96-inch OLED display in this setup?

The SSD1306-driven OLED display provides a local screen interface connected via I2C, allowing users to view their real-time heart rate, SpO₂, and system statuses directly on the band without needing to check a phone or computer.

Gallery

This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.

Kitkraft Project Hub — curated from the maker community, credited at the source.

PRJ-01356