Universal 3d Printer Remote Control / Touch Interface via iPad (Instructions)

https://www.youtube.com/watch?v=me-b0lQUsnU -- example video!

Hi everyone, just wanted to post a short tutorial for turning an iPad into a basic remote control / touchpad control panel for your 3d printer running under Repetier Host, in under an hour. (for FREE!)
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Any iPad will do. This idea was used as a method of repurposing an old iPad 1 that I had laying around, although I wouldn't be surprised if similar apps existed for Android and other tablets.
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When properly set up, the remote/panel is "tethered" to your computer -- in that, anytime you open the Repetier program, your iPad will also pull open the relevant command panel. Saves a lot of hassle.
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This idea mostly came about because I was looking for a way to skirt the tedium of booting up Repetier, connecting to my 3d printer, clicking through several menus, clicking the bed/extruder buttons, typing in values and so on, all just to get the printer in a warmed up and ready state. Now I can simply tap a handful