My new led drivers arrived today :)
These will form the basis for my new controller build
This will give you an idea of the size
Meanwell LDD series -
Pro's : small, powered by a seperate power supply, can drive from 1 to 14 leds, relatively cheap @ $9 each, will dim all the way to 0
Con's : the modules run at a fixed constant current - they are available in 300, 350, 500, 600, 700 and 1,000 mA options so this will meet most of our requirements, marginally more difficult to work with from a DIY perspective.
For small builds these will work out relatively cheaper than the alternative ELN series drivers.
I have also ordered this power supply to power these drivers - 48V 480w 10A
Next to the LDD driver in the top photo is a TLC5940 IC - this is a nice to have ;) It effectively provides 16 PWM pins with a 0-4095 range (compared to the standard Arduino range of 0-255) i.e. transitions will be smoother than normally available.
Now to start working on the GUI :)