@scanner_darkly Okay, I just had a quick look, so for example, a very simple module with 12 knobs (ABCD123) literally just offsets, no jacks out or any other features, is totally the sort of thing that could be achieved with an Arduino! This would effectively double or ‘free up’ the inputs on the ER-301. I would use this a lot because it would free up my offsets in more complex modules and provide a coherent and playable interface with enough controls for most of my custom units.
It’s actually been on my mind for a while and i kept thinking of building an analogue control surface like this, or a midi one - but both ideas haven’t taken off because of the obvious limitations, this is much more appealing!
When things get quiet again (I am ridiculously busy at the moment) I might have a go, because this doesn’t sound too difficult at all
Unless anyone else does it in the mean time