Mruby/C and picoruby: high level langs in low-level devices?

PicoRuby PicoRuby is an alternative mruby implementation which is: Small foot print ROM: 256 KB (depending on build config) RAM: 128 KB or less (depending on app code) (Figures in 32 bit architecture) Portable Depends on only standard C library such as glibc, Newlib or Newlib-nano Reference microcontroller boards Raspberry Pi Pico - Arm Cortex-M0+, 264 KB RAM, 2 MB Flash API documentation with some demo videos https://picoruby.github.io/ Depends on mruby/c (mrubyc/mrubyc): Another implementation of mruby virtual machine Used by PRK Firmware: Keyboard firmware for Raspberry Pi Pico picoruby.wasm: PicoRuby WASI runtime for WebAssembly Build Prerequisites C toolchain git ruby (should be CRuby 3.0+) git clone --recursive https://github.com/picoruby/picoruby cd picoruby/ rake # PICORUBY_DEBUG=1 rake # for debug build # PICORUBY_DEBUG=1 PICORUBY_NO_LIBC_ALLOC=1 rake # for debug build using mruby/c's memory allocator bin/picoruby -e 'puts "Hello World!"' Cross compilation ... Read full article.