[cary]

I am using the Mini Revolution 32bit F4 Based flight controller.

I have another component that I want to activate when the system is armed.  I would like to trigger it with 5v.  Is there a way to activate a pin on the Flexi port or main port that will output 5v when armed?

Thank you!

[f5soh]

This can be done using a small arduino board, take a look here : Extend a Flightcontroller with an Arduino

[Mongchol]

 It's the information I'm looking for as well.