If you are using the standard 512 nomad
dongle then you will only be able to control 1.7 of these 5m reels. If you are wanting to use more than this, or control a
stage lighting rig
as well then you might want to ether look into a separate control software such as
Enttec LED Mapper, which you can then control via nomad in the same manner as a moving light. You could also opt for 50IC/M tape to get double the length, albeit a further
pixel pitch... also achievable with 24v strip, using 6 leds per "
pixel" instead of 3... or using a controller that allows
pixel grouping. I know the
Enttec Pixie
driver will allow this, and I highly recommend it as an "all-in-one" solution for small projects, they seem to pop up on ebay a good
bit.
Luckily, you've selected 12v strip instead of 5v so you wont have to deal with a
major power injection process, but you should read up on basic electricity (i.e.
ohms law) and learn about
voltage drop. If you use good copper than you should be able to just inject
power ever 5m, but depending on the
trace quality of your strip, you may need to
power a run that long from
both ends.
There's really a myriad of ways (and budgets) to interface addressable strip with nomad, or any other
DMX controller. Unless the aforementioned Pixie
Driver isn't your fancy, I would recommend going with an
artnet or
sACN (e1.31) based solution, which will work fine with nomad. I've been using the
DMX King LeDMX4 units recently, and I really like them, as they offer 4 outputs, and each can control 2 universes, the "pro" model also has a
DMX out, and can serve as a
node for the shows that don't use pixels!
If you are just wanting to have some fun, then you can
build your own controller using an
Arduino or go wireless (over wifi) with the ESP8266 board.
I really love the $20 ESPixelStick on Amazon. It uses the ESP8266 and a custom
PCB with
level shifting, fusing, and screw terminals. Just be aware of the implications of using wifi based signals in a show environment and make wise choices!