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Evil Mad Scientist Windell writes:

Last year David Friedman published on his blog Ironic Sans an interesting design concept for something that he called The Bulbdial Clock. That’s like a sundial, but with better resolution– not just an hour hand, but a minute and second hand as well, each given as a shadow from moving artificial light sources (bulbs).

We’ve recently put together a working bulbdial clock, with an implementation somewhat different from that of the original concept.

A Bulbdial Clock

Gareth Branwyn

Gareth Branwyn is a freelancer writer and the former Editorial Director of Maker Media. He is the author or editor of a dozen books on technology, DIY, and geek culture, including the first book about the web (Mosaic Quick Tour) and the Absolute Beginner’s Guide to Building Robots. He is currently working on a best-of collection of his writing, called Borg Like Me.



  1. Kent KB says:

    Great build of a swell idea….

  2. zof says:

    nothing more to say then frickin awesome

  3. blubrick says:

    I’d take a pencil sharpener to that gnomon so that it tapers down to a point. That way the business end of the shadows would be narrower than the base and make the whole thing more clock-ish.

  4. blubrick says:

    I leapt straight into criticism and came off as a bit of a dick. I really should add that it’s a mighty cool project – fat shadows or not.