Worked for a bit. Need to rewrite in Scheme.
Rewrite in Racket.

Node kinda blows. Or, if you prefer, I really don't like the 100%
callback regime.

Dispatch made quick work of things. Now, rewrite/port parts of Flow for
talking to the Arduino. I can do more of it in the browser, I think... I
have a better feel for Javascript at this point.

And, I have a text editor.

So, I can write code. Now, I compile, ship .hex back, and I'm good to
go.