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There are many ways in which people try to limit the amount of power that their computer uses. From screensavers to shutting down your pc using twitter, people keep coming up with interesting ways to go green. This tutorial shows one way to save power using sonar.


Step 1: What is sonar?

Sonar is a means of emmitting sound pulses and listening for echos. Submarines use sonar to detect objects so they can navigate through the water.Now that that's out of the way, let's figure out how to incorporate this into our computer.
Hummm carputer with sonar on the rear part of the car.

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