Project Hub /Audio Displays & Interactive Media/LED Matrix & Cube Displays/Rugged Outdoor Fitness Tracker

Intermediate

ARDUINO

₹1,500 – ₹5,000

3 – 6 Hours

Partial Kit

Rugged Outdoor Fitness Tracker

A rugged outdoor fitness tracker built using an Arduino Uno R4 WiFi, combining GPS, temperature, humidity, and accelerometer sensors with an OLED display.

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.

DHT11 Temperature and Humidity Sensor Module for Arduino Raspberry Pi Rs. 89.00
MPU6050 - Triple Axis Accelerometer + Gyroscope Module Rs. 438.00
0.96 Inch I2C/IIC 4pin OLED Display Module White Rs. 349.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

We don't carry yet: Arduino Uno R4 / Minima
GPS Module

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How It Works

The Rugged Outdoor Fitness Tracker operates by integrating several specialized sensor modules with an Arduino Uno R4 WiFi microcontroller to monitor both environmental conditions and physical motion. At the heart of the system, the Arduino coordinates data acquisition from multiple inputs using standard communication protocols. The GT-U7 GPS module continually communicates location data, which is parsed using the TinyGPSPlus library to track movement and positioning. Simultaneously, the SHT21 sensor connects via the I2C bus to measure ambient temperature and humidity, providing real-time environmental awareness. To capture physical activity, the analog ADXL335 accelerometer measures motion dynamics across three axes, converting physical acceleration into analog voltage signals that the Arduino's analog-to-digital converters read. Finally, all of this processed sensor data—including location, motion status, and weather conditions—is dynamically output to the I2C-based OLED display, allowing the user to view their fitness metrics clearly in real-time.

Why Build This

Gain practical experience building a complete wearable fitness and outdoor navigation device suitable for hiking safety monitoring.

Learn how to interface multiple digital and analog sensors simultaneously with a modern microcontroller platform.

Understand how to process environmental data like temperature and humidity alongside physical motion and GPS coordinates.

Real-World Application

Wearable fitness tracking, outdoor navigation, hiking safety monitors, and environmental condition monitoring.

Skills You'll Learn

I2C communication protocol

analog sensor reading

serial data parsing

GPS coordinate processing

display rendering

library management

Safety Precautions

No specific precautions noted for this build — always follow general electronics safety practices.

Technology Tags

ARDUINO

GPS

I2C

UART

SHT21

GT-U7

ADXL335

OLED

SENSORS

FITNESS TRACKER

Frequently Asked Questions

Can I use a different microcontroller instead of the Arduino Uno R4 WiFi?

Yes, other microcontrollers with sufficient digital pins, analog inputs, and I2C/serial capabilities can work, though the code and libraries are set up for the Arduino Uno R4 WiFi.

How does the OLED display receive data from the Arduino?

The OLED display uses the I2C communication protocol, which only requires two signal lines (SDA and SCL) in addition to power and ground, making it easy to wire alongside the SHT21 sensor.

Do I need an internet connection for the GPS module to work?

No, the GT-U7 GPS module receives signals directly from navigation satellites, so it does not require an internet connection to determine location coordinates outdoors.

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-01110