Turn your optical mouse into a scanner
Don't know what to do with your old optical mouse, or do you want to see the world from the mouse's point of view? This site has the build instructions and source code you need:
One of the more obvious features of a mouse, however, is that it can detect movement. Combine this with the just-aquired imaging features, and we have a ghetto b&w handscanner.
Via hack a day
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