For Valentine’s Day this year I have created an led heart in a light bulb lamp.
![](http://www.techydiy.org/wp-content/uploads/2016/02/tn_194.jpg)
For Valentine’s Day this year I have created an led heart in a light bulb lamp.
In this video I give some information about UV (Ultraviolet) Led Wavelength, How to calculate the series resistor value, some simple ways to wire or connect them and then look at a few items that glow under ultraviolet light.