Category Archives: craft

Happy Valentine’s Day

I had fun making light-up Valentine’s Day cards this year.

Valentine's Day Cards
Valentine’s Day Cards

They’re built from a patterns I found on Sparkfun’s website.

My design is much simpler, and requires fewer parts.

Paper Switch for LED
Paper Switch for LED

Once the card is opened, the person receiving the card simply pulls out the paper, turning on the light.  The LED and battery assembly is glued to the card with a hot glue gun.