To conclude, I must say that I am satisfied with this realization, mainly for its practicality and utilities: And practice because once positioned ...
This instructable arises from the need to illuminate the keyboard of the laptop without having to move the display to retrieve some light when working with your computer at night and without other lights on. I have plastic that is lightweight and does not risk of crawl the homes of the laptop.
Step 1: The materials
The material that I used can be seen in figure is two different plastic profiles referred one "L" and a "H", the 4 white LEDs (beam of 20 °, voltage 3.7 v), limiting resistors (not present in the figure), the plug USB and other things of easy availability.