If you think that Lua is good for that, you'd be surprised how MicroPython is good - it's written purposedly for microcontrollers. And Lua was written for "desk

If you think that Lua is good for that, you'd be surprised how MicroPython is good - it's written purposedly for microcontrollers. And Lua was written for "desktop" scripting and found its stronghold in gaming industry. Its usage on deeply embedded systems is attempt at downscaling. Which works. How well?.. MicroPython can work in 128K of "ROM" (80K for language core, rest for modules/user code). In 400K, you can do a lot with it.