Light Ornament

Last update
Mrt 2004

I always had the idea of doing something with plexiglass and some fancy light. When I came across some full color LEDs, I had to make something with them.

The idea was to engrave some text into a plexiglas sheet and light it from the sides.
The color of the LED would then change randomly to create a "never look the same" look .

I had some ideas about how to get the color to change but when I found some source code (for a PIC microcontroller) that did almost the same as what I was looking for one of my problems was solved.

Using that software as a base I changed the original hardware design to what I needed and created the first prototype.

The priciple:

The main component is a PIC12C508 micro controller. This controller will drive a buffer transsistor to enable multiple LEDs to be driven. Each LED consist out of 4 seperate LEDs in one package (1 red, 1 green, 2 blue).
The micro controller will control intensity of the LEDs by using Pulse Width Modulation.
This will procuce a nice smooth transistion between the colors.

Here some pictures of some of the colors it can create.

  Mpeg movie (2 min) 7MB        

for more inforamtion you can always contact me by email
CopyRight Oscar 2004.