[SML] A question about visual interpretation of RGB colors

[Mt. Angel Performing Arts Center]

Hi all -

In my spare time I've been designing a DMX controlled 'big pixel' to use 
on the front of our building as part of a mini-renovation.

The plan was to put up a row of them along the eave line and maybe a 
couple of other places and do some fun stuff with animating them 
(solids, chases, etc) as part of the exterior decor.

I've got the electronics working fine but getting white, red, green and 
blue LEDs to make a visual approximation of cleanly mixed color seem 
problematic. I am using multiples of each color of LED to get the 
brightness I want but the individual LEDs are easily discerned rather 
than a 'blend' of color. A translucent cap might help but would 
certainly diminish the already dimmish output.

I did one spin of the circuit board with the LEDs of each color sort of 
interleaved or scattered ( YRGB GBYR, etc) and viewing it the individual 
LEDs are very apparent. They're currently arranged into about a 
1.25x1.25" array.

I'm going to experiment with another configuration and cluster each 
color a bit closer together and grouped together and see how that works 
out -

but I'm wondering if there's any 'collective wisdom' about this sort of 
thing.

It's also possible that once I get far enough away from the LED array 
the color will blend/mix better but that's an experiment for another day.

Thanks in advance and Good Night

Carla

"Nothing goes from bad to worse so assuredly, as when the palsied hand 
of bureaucracy is laid upon it."