Project Hub /Healthcare Biomedical & Assistive/Pulse Oximeter & Vital Scanner/A Futuristic Wearable Health Monitoring Ring

Intermediate

ESP8266

₹500 – ₹1,500

3 – 6 Hours

Partial Kit

A Futuristic Wearable Health Monitoring Ring

A DIY wearable health monitoring ring built around NodeMCU ESP8266 that tracks vital health parameters and uploads them to ThingSpeak IoT cloud.

Originally published on ElectronicsForU

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.

NodeMCU ESP8266 WIFI development board based on CP2102 Rs. 660.00
2-Slot 18650 Holder with Protective Cover and On/Off Switch – Case Rs. 109.00
10pcs 5mm RED Diffused Light Emitting Diodes - LEDs Set Rs. 39.00
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 Male 20cm Rs. 45.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

We don't carry yet: Battery (generic / unspecified)
Pulse / Heart Rate Sensor
LM35 / Analog Temp Sensor

Browse all components

How It Works

The Futuristic Wearable Health Monitoring Ring operates as an integrated biomedical data acquisition and transmission system built around the NodeMCU ESP8266 microcontroller. At the core of the sensing subsystem, the MAX30100 pulse oximeter sensor uses optical technologies to measure blood oxygen saturation (SpO2) and heart rate directly from the finger, communicating its readings via I2C. Simultaneously, the LM35 temperature sensor monitors body temperature, translating thermal variations into an analog voltage that the NodeMCU's onboard analog-to-digital converter processes. A pushbutton switch provides user input, allowing manual interaction with the device, while an LED offers visual status or alert indicators during operation. Powered by a compact 3.3V battery for true wearable mobility, the NodeMCU ESP8266 gathers these real-time physiological metrics and leverages its built-in Wi-Fi capabilities to connect to a wireless network. Finally, the firmware uses the Arduino IDE environment to format and push this sensor data over the internet to the ThingSpeak IoT cloud platform, enabling continuous remote tracking and logging of the wearer's vital signs.

Why Build This

Design and deploy a practical Internet of Things (IoT) medical telemetry device suitable for remote patient monitoring and elderly care applications.

Gain hands-on experience integrating optical biomedical sensors and analog temperature transducers with a Wi-Fi-enabled microcontroller.

Implement cloud-based data logging architectures to track real-time physiological metrics via platforms like ThingSpeak.

Real-World Application

Remote patient health monitoring, elderly care, and emergency SOS alerts for individuals living at home.

Skills You'll Learn

I2C communication

analog-to-digital conversion

Wi-Fi microcontroller programming

IoT cloud data logging

sensor signal conditioning

power management for wearables

Safety Precautions

Ensure proper battery insulation and safe voltage levels since the device is worn directly on the body.

Technology Tags

IOT

WEARABLE TECHNOLOGY

HEALTH MONITORING

SENSORS

ESP8266

THINGSPEAK

PULSE OXIMETER

TEMPERATURE SENSOR

Frequently Asked Questions

How does the ring connect to the internet if it is wearable?

The NodeMCU ESP8266 features an integrated Wi-Fi module that connects directly to a local wireless network to transmit data to the cloud.

What software is required to program the microcontroller?

You will use the Arduino IDE to write, compile, and upload the code to your NodeMCU board.

Can this device run on a standard USB connection instead of a battery?

Yes, for bench testing and programming, you can power the NodeMCU via USB, though a 3.3V battery is required for portable, wearable use.

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.

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