DIY Twinkling LED Heart for Valentine's Day. Valentine's Day is enough to make even the most suave guy nervous. This February 14th, use your techy skills to make a gift that is sure to win her heart. In this video tutorial, we'll show you how to make this LED Heart Valentine's Card. The card is complete with an LCD display so you can show any message you want, and also has 20 LEDs mounted around the perimeter. The code on the microcontroller (MCU) makes the LEDs blink in a way that emulates random twinkling!
For more details, including schematics, source code, and more, see:
http://www.nerdkits.com/videos/ledheart/