You don't need to a battery or A/C power (that'd be a bad idea) to operate the iSave â€” it runs on waterpower! Employing the Faraday effect, Yu's iSave spins a wire loop within a magnetic field to generate enough juice to display the LED numbers.
The iSave is intended to come in two varieties: one for the shower and one for the sink. With the sink unit, water wasting can be flaunted "in your face" if you mistakenly leave the faucet on as you brush your teeth instead of saving the H20 strictly for rinsing.
Good job Guogun! We hope that your invention sees the light of day â€” just don't forget a U.S. version that measures water in gallons! What the heck is a liter anyway.
written by Reamon Guoqun Yu, May 17, 2007
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