Live data from Hacker News

Lily – Drone camera

news.ycombinator.com

491–496 of 496 posts

Re: Lily – Drone camera

#491

Earlier quoted context omitted.

I think you missed my point. Real model flight enthusiasts will only fly their birds at RC clubs. Clubs impose structure, safety rules, etc. In other words, even if you are flying total crap the probability of hurting anyone or causing property damage is greately reduced. To anser the other part of your question. A $3K heli has significantly better electronics and mechanics when compared to something like a DJI quad.…

It would seem we are missing each other's. "Club's impose structure, safety rules etc" given this and other automated drones the imposition of structure and safety rules is/can be written into the software. There has been mention of providing no-fly zones that people could register and given a companies interest in brand preservation the drones would respect the no-fly zones as long as untampered with. However, I do…

Responsible model airplane enthusiasts are members of the American Modelers Association. They, among other things, interface with the FAA and other regulatory agencies on our behalf. We get regular reports on relevant regulation, meetings and negotiations. Believe me, it doesn't take a mob of people to create problems for AMA members.

No software today can do what a reponsible human being flying at a club does. It's the equivalent of letting people take off and land full scale airplanes and helicopters from anywhere, fly at any altitude, in any manner they wish and without traffic control. In other words, unthinkable.

I do not fly over people or property. Software cannot make that decision for me. And software certainly cannot restrict people buying a $300 quadcopter from flying it above a group of kids at the park or over a crowd elsewhere. It is a simple matter of individual responsibility and consideration for the wellbeing of others. I choose to fly at a club because after 30 years of experience flying (and, yes, crashing) all kinds of model aircraft I know these things can fail anywhere, any time and for a million different reasons. It is beyond irresponsible to fly these things in uncontrolled airspace.

Re: Lily – Drone camera

#492
post #205

Earlier quoted context omitted.

Quadcopters can also be saved if only one motor fails using only the 3 other motors and an algo: http://diydrones.com/profiles/blogs/new-algorithm-can-save-a...

Recent research has had controlled landing on 2 motors in real robots (and one motor in simulation only). The main trick is to spin the whole vehicle around the z axis (up-down) very fast, and modulate the speed of the remaining rotors to apply forces at different places around the centre of gravity. IIRC the one-rotor version didn't work on a real robot due to limits on the frequency response of the real-world motor…

Spinning the drone so fast that the modulation is usable doesn't itself sound very safe to me.

It's an upgrade from "expensive rock with sharp blades falling out of the sky" to "expensive rock with sharp blades falling out of the sky spinning at X0 RPM, and the sharp blades are also spinning at X00 RPM"

Re: Lily – Drone camera

#493
post #459

Earlier quoted context omitted.

Sounds plausible but I haven't read about this before and would like to know more, do you have a reference handy?

In regards to turning on the z-axis to be able to land with engine failure, I believe User is referring to Autorotation: http://en.wikipedia.org/wiki/Autorotation

I thought autorotation was only useful if you're moving ahead very fast (high ground speed) while also falling. Is that right? Most drones are essentially hovering much of the time.

Re: Lily – Drone camera

#494
I found this in the Youtube video comments:

> Currently, Lily does not have any obstacle avoidance capabilities. We have found that most outdoor activities do not need obstacle avoidance because Lily can follow the user's path. But again, there are no guarantees that Lily will not hit anything while it is following you.

"no obstacle avoidance" o_O

Re: Lily – Drone camera

#495
post #237

Earlier quoted context omitted.

That is until your cheap drone hits a paraglider, or other light vehicle that is actually allowed to operate in this air space. In most legislations I am aware of, RC flight requires an operator to be in control of the drone.

>That is until your cheap drone hits a paraglider, or other light vehicle that is actually allowed to operate in this air space. Why is the paraglider flying under the drone 50ft off the ground?

Because he was soaring on a hillside while you were riding your mountain bike down the trail.
Post reply on HN