Few things do the next job at decimating desktop real estate than a bulky old flatbed scanner . Skinnier replacements are cheap this present day, but what’s one to do with the old ones? An enterprising hacker who goes by the handle Sprite_tm, an identical bloke who brought us a knock-operated door , has managed to create a multitouch panel out of his. He extracted the one-line CCD and mounted that below the display. He then attached five LEDs above it to polish light down. When his finger touches the screen it casts a shadow at the CCD and, with a bit (probably tons) of custom software he’s capable of triangulate the location of the touch. The system even works with multiple fingers, though we’re guessing should they overlap vertically the system might get a bit finicky. Look at a demo below after which click during the source link for one heck of a close how-to.
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