[snazz]

I have no idea about the load carrying capacity of the drone, but it would be an awfully cool project to add an ultrasound sensor(s) and write a program for flying it around randomly indoors without hitting walls. A fancy feature might be to solve a real-life maze by flying through it. Would such a thing be possible?

[snovv_crash]

Check out PX4/Avoidance on Github.

[msadowski]

Not ultrasound but at one point in my life I made this: https://www.youtube.com/watch?v=ig8IRTejn8A

(I'm even piloting in this video)

[snazz]

Very cool. Thank you for sharing!