I have not modified the code at all, so I am wondering if it needs some extra config file or something, I've read the documentation, but its not jumping out as to what I need. I will find it but I thought someone here may have some real world working examples of it being used other than this one.
I think the references to "arduino or teensy" on the github page imply that the software is only likely to work with boards that have at least two "serial" ports (ie Teensy, Leonardo, Arduino Micro, etc.) (One HardwareSerial port, one Serial over nativeUSB port.)
It seems to pre-date the implementation of library information describing which boards are compatible...
Thanks for your reply. One would think that available methods of serial communication would be ubiquitous and well documented and that could be the case if you know where to look.