[apalrd]

No, I don't think it will work:

-The cRio is NOT a general-purpose processing platform. It runs VxWorks (an RTOS), not a commonly used desktop operating system. As such, it requires that all binaries be compiled for VxWorks. This is a good thing, as the timing standards of VxWorks (or any other RTOS) are much higher than standard Windows.

-Ruby is, to my knowledge, not compiled for VxWorks, and if it was, it would not be compiled with WPI library functions

-You would have no interface to the WPI library without writing all of the wrappers.

-In general, the cool programming language of the week is ALWAYS a bad idea for embedded and real-time applications because it's not designed with the timing requirements and low CPU/RAM requirements of embedded systems, something most low-level languages (such as C and variants) are well suited for. LabVIEW is special because it's optimized for NI hardware, although it's still not very efficient.