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Spiritus of Yekaterinburg, the Russian Federation, built this analog projection clock with a mirror and a surface-mount white LED.

John Baichtal

John Baichtal

My interests include writing, electronics, RPGs, scifi, hackers & hackerspaces, 3D printing, building sets & toys. @johnbaichtal nerdage.net


  • http://pulse.yahoo.com/_3X4RESQP6C4YYIFQMYU2Q63ZB4 AndrewS

    probably one of the simplest things i have ever seen.
    very clever indeed.

  • http://twitter.com/matseng Mats Engstrom

    I would never have imagined that it would be as simple as just reversing the leads of the coil to actually make the clock go backwards. I thought that the gear and escapement mechanisms only worked in one direction.

    I’ll definitely try to duplicate this when I get back home….

    • http://pulse.yahoo.com/_4FW4UNDHBTQRHEBOKNO33FP2JY Sono

      Infact, I’m afraid that reversing the coil is not sufficient to reverse the rotation of a two-poles motor.
      To do so I once had to modify the shape of the stator. Some motor arrangment might require different actions, but I’m totally sure that reversing the coil won’t work!. That guy’s clock is (definitely) working in reverse.

      …nice hack, anyways!

      Alex

  • Anonymous

    Great! Sometimes the most obvious approach is overlooked.

  • Anonymous

    Very clever – thankee!

    Some nearly as clever person will now figure how to do with this an LCD digital display…?

  • Anonymous

    Sometimes you see a post and you just think Bravo !

  • http://profiles.google.com/phatdaddio Thomas Reese

    Simple Elegant…Brilliant!

  • http://www.facebook.com/profile.php?id=1210335479 Bob Darlington

    You can get backwards clock movements on the net for about 7 bucks.

  • http://twitter.com/pvused Pacific Vacuum

    That rules man, outstanding.

  • http://twitter.com/powscience Pow! Science!

    Awesome!

  • http://twitter.com/powscience Pow! Science!

    Awesome!

  • http://twitter.com/powscience Pow! Science!

    Awesome!

  • http://twitter.com/powscience Pow! Science!

    Awesome!

  • http://twitter.com/powscience Pow! Science!

    Awesome!

  • http://twitter.com/powscience Pow! Science!

    Awesome!

  • http://twitter.com/powscience Pow! Science!

    Awesome!

  • http://twitter.com/powscience Pow! Science!

    Awesome!