hydro arm shiver


This forearm band is to measure physical activity while swimming laps.  LEDs are turned on and accumulated as the workout goes longer.


The Nike Fuelband is the main inspiration for the project, except since that product is not waterproof, that is where this project takes over.

Project Materials and Cost

fabric – $15

accelerometer – $15

lilypad – $60

waterproofing resin – $20

waterproof USB – $15


  • acquire materials
  • convert Nike Fuel points to water activity
  • test waterproofing methods for circuitry
  • code with accelerometer
  • test motion capture with swimming motions
  • construct arm band
  • prepare materials, like a fish tank, for presentation

Backup Plan

Put entire electronic housing in waterproof pouch if resin system fails.