Adapting a Durst Laborator 1000 condenser head to work with LEDs

I have just finished an adaptation in a Durst Laborator 1000, condenser head, and changed it to a diffuser head using LEDs. I am very much surprised with the results. Highlights:

1) It is incredibly fast, that means, a lot of light output compared with the former lightbulb I was using. A few seconds with lens stopped down to f/32 is enough for a 2x magnification from 4x5.

2) It uses a micro-controller (Arduino family) to mix green and blue light in order to get contrast control. That makes very easy to use different contrast in different areas of the same print (more troublesome with filters).

I made a video showing one print made with it:

More technical details about the project can be found at https://apenasimagens.com/en/enlarger-head-using-leds/

For those of you who have thought or considered LEDs, I would like to say: go for it, it is really a step change.

"Now you just need to build the point source version..."

- Indeed! I have a Laborator 1000 with colour head lying unused because the cooling fan imparts too much vibration.

Been meaning to modify the fan or light source for some time, but other projects have been more pressing.