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Tiny USB business card

30 Oct

[Frank Zhao] put together a USB business card. It’s even got the instructions printed right on the silk screen of the PCB explaining how it should be used. He based the design around an AVR ATtiny85 microcontroller. It runs the V-USB package that handles USB identification and communication protocols. The rest of the hardware is pretty standard, the uC draws power from the 5V USB rail, with a couple of 3.6V Zener diodes to drop the two data lines down to the proper level.

Once plugged in it waits until it detects three caps lock keypresses in a row, then spews a string of its own keypresses that type out [Frank’s] contact information in a text editor window (video after the break). It’s not as reusable as the mass storage business card because [Frank] didn’t breakout the pins on controller. But we still enjoy seeing business cards that make you stand out.

This is a great project to tackle with your newly acquired AVR programming skills.

from Hack a Day

 
1 Comment

Posted by on October 30, 2010 in Technology

 

One response to “Tiny USB business card

  1. teknophilia

    October 30, 2010 at 8:59 pm

    There’s a similar And there are other creative business cards at: http://blog.makezine.com/archive/2010/02/toolbox_business_cards.html I think its the challenge of making something small and thin that’s still cool and functional that makes it so much fun.

     

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