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Wearable Device • Motion Tracking • Embedded Systems

VeloS Band

A wearable motion-tracking device designed to calculate and display the speed of a user’s arm during a swing.

project: collaborative build device: wearable swing-speed tracker focus: motion sensing + speed display

./project_summary

Project Overview

Purpose

VeloS Band was built to provide a simple wearable way to estimate swing speed from arm motion and display the result directly to the user.

Problem

Measuring swing speed usually requires external sensors, cameras, or dedicated training tools. This project explored a compact wearable alternative.

Approach

The device uses embedded hardware and motion-sensing logic to detect swing movement, process the motion data, and present a readable speed result.

./system_features

Core System Ideas

Wearable Form Factor

  • Designed around a wrist-worn device concept
  • Focused on portability and quick use during motion
  • Built for direct user feedback without needing an external display

Motion Detection

  • Tracks arm movement during a swing
  • Uses motion samples over time instead of a single instant reading
  • Supports swing-speed estimation from changing motion data

Speed Calculation

  • Processes sensor data into a speed estimate
  • Focuses on identifying the meaningful part of the swing
  • Displays a final speed value to the user

Embedded Interface

  • Uses onboard controls for recording and interaction
  • Displays device states and results
  • Supports a simple calibration and recording workflow

./device_workflow

Device Workflow

01 Calibrate

The device establishes a starting reference before recording motion.

02 Record Swing

The system captures motion data during the forward swing movement.

03 Process Data

Motion samples are interpreted to estimate the user’s arm speed.

04 Display Result

The final speed result is shown directly on the wearable device.

./team

Collaborators

A collaborative project made by Marco Gallardo, Kevin Lewis, Andy Liu, and Blas Arras.

./tech_focus

Technical Focus

Embedded Systems Wearable Hardware Motion Sensors Sensor Sampling Calibration Logic Speed Estimation OLED Display Microcontroller Programming Physical Computing
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