I have found so much useful info on this forum, but I'm having a hard time and getting overwhelmed trying to apply it to my specific projects. I'm looking for power and signal requirements to run a chain of 155 (one hundred fifty-five) 12V 2811 modules. The modules I'm using are http://www.holidaycoro.com/Smart-Pixel-Rectangle-RGB-Module-p/656.htm I'll be using an ECG-P2 to control the lights. All the lights will be confined within a 5'x5' area. The project will be located about 20' from a power outlet. Basically I'm looking to know: 1. How many power supplies, of what output spec do I need to power this project? At what points does the power need to be injected? What type of cable do I need to use? 2. Can I use data input at the beginning of module #1 and chain it all the way through #155, or does data need to be injected several times throughout the project? 3. I believe my 155 modules will use 465 channels, this will be okay running out of one port from the ECG-P2, correct? 4. Should I use power output from the ECG-P2, or rely on separate power supplies? thanks in advance!