"rich" wrote

Well of course, the best is to use an AOA vane, like the jets use. The
biggest problem is where the jets conveniently mount it on the side of
the fuselage, on most singles, that's right in the prop blast,
rendering it useless. If you could find someplace to mount it outside
of the prop blast, then it would work great. But finding that
place......

On a mast like a pitot tube, out on the wing.

I propose 4 or 5 microswitches with a mechanical linkage to go from the vane
to the switches in the wing. Send the signal to some led's, and you are
done. Cheap and easy.
--
Jim in NC