I linked to some isomorphic keyboards in production at the end of the post. A couple more that I'm aware of: https://www.striso.org/ https://www.striso.org/ h

I linked to some isomorphic keyboards in production at the end of the post. A couple more that I'm aware of: https://www.striso.org/ https://www.striso.org/ https://www.kickstarter.com/projects/joyst/joyst-jv-1-joystick-midi-controller-with-full-mpe https://www.kickstarter.com/projects/joyst/joyst-jv-1-joysti... There's also the "thummer" from many many years ago, but I don't think it ever went anywhere. > For HN readers like me who would learn piano mid-life from scratch, what are the best electric pianos that can be fully hacked via open source software, in the same spirit as QMK? I don't have an answer for this question, but you can go pretty far with playing around in software. MIDI is basically just an event protocol like `{ note: 23, velocity: 99 }`, and you can respond to the events however you want from music synthesis software. I've used a SuperCollider front-end called Overtone to remap my Axis-49 into various layouts -- it's fun having a full programming language available so you can do dumb things. There's a pretty big community of people making Arduino-powered MIDI controllers as well, so lots of resources if you did want to hack your own from scratch. Also, regarding chording the other kind of keyboard: you might find this older project of mine interesting. https://ianthehenry.com/posts/peggi/ https://ianthehenry.com/posts/peggi/