That's crazy, you made this without even knowing about Padcon?! Simply put, Padcon is a homebrew app as well as a plugin for the Wii U Plugin System homebrew that allows you to set hotkey(s) to turn on and off the Gamepad's screen (default is R3, but I believe you get the option to change the hotkey anytime you enable the homebrew). Granted, the controller remains active, even the touch controls still work, it just helps you save battery on the Gamepad by turning off and on the display as you desire whenever you want.
