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February 14, 2014 AT 5:30 am

Touch-Activated, Pulsating LED Heart Valentine’s Card #valentinesday

Here’s another great Valentine’s project, this time by Ian Lesnet on DIY Life. Put your Cadsoft Eagle software to good use!

What’s the perfect gift for the special someone that puts up with a soldering iron in the kitchen and little bits of wire underfoot? How about this touch activated, pulsating LED heart? This geeky Valentine’s Day card pays homage to the musical greeting cards that are popular this time of year. This isn’t just for Valentine’s Day — it’s a simple heart, so give it to your loved one any time of the year. You can also make your own shapes using the same basic circuit.

A microcontroller pulses the LED heart for a few seconds when the touch switch is activated. After the fade routine, the microcontroller enters a power saving sleep mode. The card runs from a single button cell battery. A battery should last a long time because little power is consumed in the sleep state.

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3d_printing_vCardHappy Valentine’s Day from Adafruit! Today we are highlighting our favorite heart-shaped electronics projects. We have lots of excellent projects to let your loved one know that you care. Be sure to check out our gift guide as well!


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