I spent this afternoon writing a script to convert (most of) the Arduino C++ sketch into plain POSIX C, in preparation for trying to run it on a Linux laptop or empeg. The idea is that I just re-run the script with minor mods whenever you update the sketch.

Still poking away at it, but perhaps 75% of the way there now. The variable numbers of arguments for things like .substring and the like are giving me the most grief.