Spotted in the MAKE Flickr pool, a nifty laser “sundial,” controlled by an ATtiny24 MCU and a servo:
An Atmel ATtiny24 microcontroller drives an R/C servo which in turn rotates a line LASER taken from a LASER level.
The microcontroller runs a software real time clock and turns the servo and the line LASER to mimic the shadow cast from the style of a sundial as the time goes.
XXI century sundial – Now for Arduino also!
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Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. His free weekly-ish maker tips newsletter can be found at garstipsandtools.com.
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