Hi Glen,

Actually I wasn't thinking of doing it at all, I was just noodling the
idea -- wondering about the "how". However if I were to do it I would build
it myself, and they would be in addition to standard gauges. The info I got
here is plenty to keep me going for a while now.

I also agree with the logbook preference, it's similar to a line I often
used in the office when everyone had PDAs. I used a notebook and a daytimer
and referred to them as analog assistants (PAAs?). They could survive a drop
from quite a height, never ran out of batteries and you could access any
data directly without having to deal with menus.

I'm not sure if you are talking about buying a solution or building
one. If it's the former, someone already mentioned CruzPro. Their
stuff looks nice, but I don't know anyone with personal experience
using it. If ibuilding a solution interests you...