Originally Posted by zAAm
Okay, I had to test the LED's. They seem to confirm my theory, although diffusing the light might be the biggest problem... Will probably need to use indirect light.
Here's just one red and one UV LED on a breadboard to test. Colours are very discrete.
Now, just by adding a white surface for the light to reflect (and diffuse) from, in this case the handy ol' cheapo ruler, the light is mixed and the result is a pinkish tint very close to what I want
So I think there is definitely some fact behind my theory. Now, how to make this test into a prototype?
looks good certainly caught me out