Club MacMost Exclusive: Turning an iPad Into a Mac Control Surface

I'm looking at ways to use game controllers, MIDI devices, and other hardware as a control surface (group of shortcut buttons) to control my Mac and make it easier to edit video. So far not much luck in finding a good option, except in turning my iPad into a customizable control surface using Touch Portal. Link: <a href="https://www.touch-portal.com" rel="nofollow noopener" target="_blank">https://www.touch-portal.com</a> 

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