"Peter Dohm" wrote

OTOH, a true AOA system that can be calibrated over the full reasonable
range of angles is far from trivial--and probably well beyond my design
capabilities.

Should not be a big deal. I have in mind how to do the whole thing (with
angles of attack and stall angles with and without flaps) mechanically. No
electronics involved, other than some switches, linkages and led lights.
--
Jim in NC