Now here is a DIY project that will appeal to all sci-fi fans and tech freaks. Make your own Dot Matrix Business Card with a full graphical display on it that can be customized for a number of scrolling messages. Sounds neat? Then read on.
“The design is really quite simple for what it does – a matrix of 5×15 LEDs, connected to a single-chip “PIC”microcontroller. A handful of resistors and switches complete the design (Schematic available below). By keeping the microcontroller in sleep mode unless the buttons are pressed, the battery can last several years, and still allow a couple of thousand displays of your messages.”
For the rest of the entry go here.
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