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Luminair ipad app almost makes me want to be a Lighting Director again. No more dimmer board 'cause you carry it around in your pocket.
Thru DMX you can control a Universe (512 channels) with a single ipad. 512 channels sounds like a lot but these days lights use multiple channels, 23 channels for a moving light and 3 channels for each LED light. But these are grouped so you can change colors instantly with a simple picker.
I was talking to an LD for the Food Network who now has to use two separate Universes to light his show. He has one ipad/Universe just for moving lights and another ipad/Universe for LED washes and tungsten sources.
Plus, he has two more in back-up running blacked out in case the primary ipads freeze on him... which has happened to him on a live show. I've been there! He simply unblacks the back-ups and runs the show on those. So, a dimmer board with 1024 channels and a back-up dimmer board for $2400 bucks... the price of 4 ipads.
While he runs his own board in the booth, his gaffer is on the floor with the iphone app, focusing lights, etc.
Manufacturers are just starting to make lights with built in routers so each is like a mini-computer that can be controlled wirelessly. Then all you have to do is figure out how to make those lights battery powered and we'll never have to run a cable again!
Check out the videos on the website and on youtube. This one will lead you to a bunch:
http://synthe-fx.com/products/luminairipad
http://synthe-fx.com/products/luminair