Here’s a little weekend project I threw together using an Arduino and some mini oled screens. I have a template rackspace I use that has four faders and although they are usually pretty consistent they do vary depending on the song. I may have a sax or strings or other instruments and can’t always remember what’s where. I wrote some GP script that sends a sysex message to the device with the label from each widget so whenever I switch rackspaces the displays update. This sits on my keyboard next to a x-touch mini so I know what encoder controls what.
I was going to do five displays because that’s what I had on hand but my router malfunctioned (or operator error 
) and milled through the traces of the last display. Oh well, I really only needed four anyway.