Slightly off topic, but I really want an instrument that works like LinnStrument but with a synth built-in (so you can actually play it without connecting to something else).
The same Eaganmatrix engine used in the Continuum has also shown up in the Expressive E Osmose, so apparently Haken is willing to work with other companies to integrate their synth in more products -- and the result is quite an amazing device. Haken also makes a standalone Eurorack module.
I'm not sure if there's a good open-source MPE synth that's easy to port to microcontrollers. Surge is really impressive but it's not made to run on simple embedded platforms.
You can bolt one in / under / on the side, and map controls for it. The MVP is duct tape but it's possible to get a small synth & battery into the case.
I know it's not quite the same thing as you're asking for, but when you dig into the linnstrument it turns out to be very hackable.
The problem is a "small synth", like a Arturia Minibrute still feels quite large. And what should I do with it's keyboard? I use LinnStrument exactly because I'm not good at playing pinao-layout keyboard...
But maybe I didn't google the correct word for it.
The same Eaganmatrix engine used in the Continuum has also shown up in the Expressive E Osmose, so apparently Haken is willing to work with other companies to integrate their synth in more products -- and the result is quite an amazing device. Haken also makes a standalone Eurorack module.
I'm not sure if there's a good open-source MPE synth that's easy to port to microcontrollers. Surge is really impressive but it's not made to run on simple embedded platforms.