On my L-235 I couldn't figure out a good way to mount a microswitch for the AoA system which would engage in the "flaps down" position, so I used a U-shaped magnetic reed switch instead. The NO contacts close when a ferrous object passes between the two arms of the switch and my flap actuator arm serves that function. I glued a couple phenolic "guides" onto the switch in case the flap actuator and switch became mis-aligned for any reason. This scheme seems to work, but I'm fiddling with the adjustment at the moment. This photo (looking aft) shows the flaps in the "UP" position and the microswitch not engaged.



This photo (taken from the aft side looking forward) shows the flaps in the "FULLY DOWN" position:


DISCLAIMER: I AM NOT RECOMMENDING ANYONE ELSE TRY THIS, I'm just publishing WHAT I HAVE DONE ON MY AIRPLANE for education and discussion only. This idea may or may not be a good or reliable solution.