Arm Cross and Hold (Timer)

A simple timer system designed to support exercises by tracking hold duration with real-time visual feedback.

How it works

  1. The user starts the timer using either physical buttons or hand gestures.
  2. The timer can be paused, resumed, or stopped through buttons or hand gestures.
  3. The LED display shows the elapsed time in real time and freezes when paused.

User Feedback and System Improvement

Feedback

  • The purpose of the prototype is not very clear

Improvements Made (see prototype x)

  • Suspended

Schematic

Features

Dual Interaction Modes

Supports both button control and gesture-based control.

Real-Time Timer Display

Continuously shows the elapsed hold time on the LED matrix.