[–] metawizard 0 points 1 point 1 point (+1|-0) ago
This is probably not millions of dollars of engineering. It could easily be a small 2 or 3 person group of hobbyists, and it's probably around $5k in hardware if they used high end components. I build and fly drones myself, and everything involved in this is pretty simple with the technology available, even accounting for redundancy.