If you're really about soft-realtime stuff, look into Erlang/Elixir by way of the Nerves project: http://nerves-project.org/ http://nerves-project.org/ The ho

If you're really about soft-realtime stuff, look into Erlang/Elixir by way of the Nerves project: http://nerves-project.org/ http://nerves-project.org/ The hot code-loading is really impressive; I've seen quadcopters update motor controllers in-flight to fix bugs. I think that that's probably the future. The non-blocking stuff in Node is more a function of the library style than the language itself (though the closures make life easier). I don't think there's any reason why the Ruby stuff necessarily has to be slower and blocky. Artoo has some nifty stuff in the vein of testing: http://artoo.io/documentation/guides/test-driven-robotics/ http://artoo.io/documentation/guides/test-driven-robotics/