Modding RGB cooler

     Everybody has seen transparent multicoloured  coolers in modding shops: red, blue, green, with neon backlight. I wanted to make a multicoloured cooler, not only with simple change of colours, but with light effects. So I started this project… project named “RGB Cooler”.
I decided to make the device on microcontroller ATmega8 of Atmel company. What I wanted to gain from the modded device:
1. Simple change of three colours: red, blue and green.
2. Change-over of different light effects.
3. Change of effects in free-running mode of random type.
At first I bought a 120 mm cooler in a modding shop. Properly speaking, size is not very important.., the main thing is that the cooler must be transparent.
    
 

The cooler had 5 mm blue light diodes; there were 4 diodes, one in each corner. It looks so when switched off.

We bought 12 light diodes of 3 mm diameter for our mode, 4 diodes for each colour:

This is the brain of our modded device – single-chip programmed processor ATMEGA8-16PU; it costs near one dollar.