"Drones haven't been banned in National Parks, just unauthorized use. They can still be used for research and other purposes with the clearance of Park management."
"R10 Quadrotor = Total disaster. They delivered, but it was a terrible, buggy system (not APM-based, which should have set off alarm bells). Worst Kickstarter project I've backed."
"The Y6 DIY kit looks very interesting, but unless I'm missing it, the product page doesn't have critical information like the frame weight and size, and clearance under the body. Without that, it's difficult to decide whether this is a good choice…"
"You should check with the FAA before doing this. Flying a drone under any conditions or limitations for commercial purposes / business / compensation is a violation of current FAA regulations, even if it may be legal (opinions differ)."
"Very few people will pay even $1500 for a SenseFly clone, much less the original at $20K, as long as the FAA says that you can't fly one of these and make money (or use them for research/non-profit/academic work, for that matter)."
"Blue locking compound is spec'ed as appropriate for bolts/screws >= 1/4" in diameter. If used for smaller bolts/screws, you may run into problems removing them unless you heat them up.…"
"Very limited Android support, since Bluetooth 4.0 isn't fully supported on most phones. If you could live with shorter range device (100 ft.), the original StickNFind is cheaper: http://www.indiegogo.com/sticknfind/x/1850056."