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Thread: DIY tractor beam

  1. 13-01-2017, 02:53 PM #1
    Xlucine
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    DIY tractor beam

    As said on tin:
    http://www.instructables.com/id/Acoustic-Tractor-Beam/
    It's a good excuse to get yourself an oscilloscope
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  2. 14-01-2017, 09:08 PM #2
    Peter Parker
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    Re: DIY tractor beam

    Two-in-one sonic levitator and high-powered dog whistle! Amaze your friends with the ability to make small plastic beads hover whilst summoning every dog within 10 miles!
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