valentines day gift

Posted on Feb 6, 2014

This year for Valentine`s Day I decided to get nerdy and make something electronic for Caroline. I first tried to make a animated LED heart with a joule thief  and a single AA battery, but I couldn`t make a suitable air coil. So, I decided to modify this circuit to make a throbbing LED heart. The circuit uses a 555 timer, NPN transistor, 12 LEDs

valentines day gift
Click here to download the full size of the above Circuit.

, a capacitor, and two resistors. The schematic is below. I only drew in 6 LEDs in parallel, but there should be 12.

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