"Hi Rhosyn. Check out the manual. There are indeed inputs on that gimbal for pan/tilt. These are indeed compatible with the Pixhawk. I do not know if you have any kind of FPV setup on your Iris+, but this needs a video transmitter and receiver.…"
"No built in functionality for altitude based deployment right now. If you check the wiki page there are some options for mode based deployment. I assume you are working with 'copter, anyway.
It is also possible to DIY it, if you are ambitious. I…"
"Glenn- Actually, you will want to keep the prop direction exactly the same as a standard quad. Instead, reverse the spin direction of the motors. Since they are mounted upsidedown, this will make them spin the props in the correct direction.…"
"Show me a video of a video of a Phantom 4 landing safely with a missing prop, and I will reward you handsomely. As for the sense and avoid, I can't say I have tried it so I will withhold judgement. And pretty much any quad can fly with no GPS, as…"