So, you got your new laser pointer from Ebay and you played around with it. Now you just want to point it against a wall and admire the beauty of its beam in the dark and you find out that it's hard to keep it on due to its bad button(most cases on cheap ebay pointers). Or you just want to keep it o...By: bneo99
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from Instructables: exploring - technology - robots http://ift.tt/14pjdlA
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