Generic instructions for longer setups?

[greggman]

Thanks so much for your tutorials.

Let's say I want to run 10 strips, 300 LEDs each, so 3000 LEDs.

• Do I still use a 1000uf capacitor?
• Do I still use a 220R resistor?
• It's it correct to put one power supply per strip in parallel?

                                        
[USB-POWER]->[MicroController]--->[200R]-->+
                                           |
  +<---------------------------------------+
  |
  +-->Din+--------+--->Din+--------+--->Din+--------+--->Din+--------+--->Din+--------+
   +->+5V|300 LEDS|-+->+5V|300 LEDS|-+->+5V|300 LEDS|-+->+5V|300 LEDS|-+->+5V|300 LEDS|
   |  GND+--------+-|->GND+--------+-|->GND+--------+-|->GND+--------+-|->GND+--------+
   |    ^           |    ^           |    ^           |    ^           |    ^
   |    |           |    |           |    |           |    |           |    |           
   +1kuf+           +1kuf+           +1kuf+           +1kuf+           +1kuf+           
   |    |           |    |           |    |           |    |           |    |           
   |  +GND-------+  |  +GND-------+  |  +GND-------+  |  +GND-------+  |  +GND-------+  
   +5v| 5V power |  +5v| 5V power |  +5v| 5V power |  +5v| 5V power |  +5v| 5V power |  
      +----------+     +----------+     +----------+     +----------+     +----------+  

All the strips are connected in parallel and there's a separate 5V power supply per strip.

Does it matter what the power supply is? For example I tried powering 1 strip on a USB recharger battery. The battery is only rated 3A and a single strip can apparently use 18A but it ran for 15hrs and was bright enough with at least 1/3 of the LEDs on at all times.