I would want to see a Phoenix connector, popular these days. Surely you have that layout. But your choice of connectors depends on where that thing is going to be installed so maybe RJ jacks in and out with Phoenix for power? Also, you have a lot of unused real estate on that board, you could probably cut the board size down to 1/4 what you have there. If you are going to do one with multiple controls you're going to have to shrink the layout down anyway otherwise you'll have a board the size of Kansas.

-Hal

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