It’s not roses or jewelry, but we hope [Erik]’s light-up USB heart will be appreciated by his significant other. When the two heart pieces come in contact with each other, each side lights up. [Erik] ...

With only a week left until Valentine’s day, [Henry] needed to think on his feet. He wanted to build something for his girlfriend but with limited time, he needed to work with what he had available.

The circuit uses a LED array to create a heart shape device that can be used as a gift during Valentine’s or any special occasion. The circuit uses a LED array to create a heart shape device that can ...