Depend on which kind of hardware would like to use, .. what is your goal?
I worked on a 8bit+ Clojure to microcontrollers, work fine, but limited.. at least 16bit needed. I dont have time finish the project, because other things.. but I would like to opensource to community1👍
MFikes created cljs based microcontrollers, or you can use ros too
Btw mainly C/C++ best solution many cases at Robotic