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Intro to the Photo Interrupter
Posted November 4, 2010 by Chris
The Photo Interrupter is a cool piece of technology that provides a means of electrical/mechanical feed back. A small piece of tape with clear and black lines either interrupts or allows the unit to send a signal. This feedback is great for very accurate positioning, like in printers and scanner. The project write-up is indepth and uses an arduino for the brains.
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