Dot matrix business card

Technology

Tom Ward, whose work will appear in The Best of Instructables book we’re currently editing, has just posted an awesome new “extreme business card.” It uses a matrix of 5×15 0603 LEDs driven by a PIC16F57 MCU. He says you can get the parts cost down to about $5 each in quantity. Not the kind of card you’d give out on street corners, but if you *really* want to impress somebody…

Dot Matrix Business Card

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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. And he has a new best-of writing collection and “lazy man’s memoir,” called Borg Like Me.

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