On 2005-03-27, Ron Garret wrote:
backup plan. Obviously a portable GPS and Comm unit are first on the
priority list, but I'd also like to get a portable AI, since it's really
hard to keep the wings level with just a GPS.

I built a solid state turn coordinator with LED display that would run
for about 24 hours on a pair of alkaline batteries. I never got around
to moving it off the breadboard and into a nice package. There is a
company that sells something I suspect is very similar. It's about
the size of a deck of cards with row of LEDs on one edge, but of course
now I can't find the name of it.

Anyway, in concert with a portable GPS or even just a magnetic compass
a solid state turn coordinator could keep you going under some pretty
dire circumstances.

--
Ben Jackson

http://www.ben.com/