u/Dry_Comparison3812

I'm an industrial designer by trade, but an amateur musician on the side, and I've been tinkering around with building a small portable digital keyboard just for personal use, tinkering, and to learn a thing or two about the engineering behind it. I've always got a notebook with me to jot down notes/drawings/ideas, so I'm kind of trying to make my own version of that but for music.

What would be all your essentials for something like this? Mostly just curious how my ideals and chosen functions compare to everyone else's.

I know things like HiChord, Orchid, and other pocket synths already exist and I've looked at those, just having some fun exploring and making one for myself! Thanks!