Hi,

Developing a system like this should be fun and not too difficult, with the exception of horizon sensing itself. That is always tricky. If it is your objective to take on the challenge of finding the horizon reliably using cameras then let the games begin! But if you don't mind avoiding the sensor development so that your project can move on towards your larger goals, I suggest that you check out the FMA Copilot system. It works remarkably well, is inexpensive, and the output signals can be easily adapted for what you have in mind.

Good luck!
Q