Collaborative way to achieve a low cost graphical waterfall

Hi,

I want to build a graphical waterfall like this one https://www.youtube.com/watch?v=Z2LUz2WVcek .

I saw a similar post here but with incomplete information ... ( http://forum.arduino.cc/index.php?topic=60117.0 )

I want to know if someone is interested in building one with me! We'll exchange ideas, code and all that.

I know how to do the software, I'm a software engineer. I need help with the hardware part.

I have already compiled some papers of 2 guys who have build one. I can share them with you.

How big can we make it ? 256 valves ?

Thanks ahead!

-Paul

Hi I am interested with the subject. I am a mechanical engineer.