Hi
For some reason your replies got caught as spam (sry for that).
Do you know how the LEDs are controlled in the vmix? Are they set by MIDI signals, or coded so the last one on each row is on?
How many buttons do you want? I have sketched on a larger pad with 14 LEDs and switches… The LED rows are grouped, but it should not be too hard to swap a LED and button row.
The sliders are quite bulky, I have some ideas for 3D printing a smaller slider using the same trimpot…