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DJI FPV

dji.com

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Re: DJI FPV

#11

Post by Naomarik »

Dave_Rosenthal wrote: post #4

There has been a huge divide in the drone world between high performance first person view (FPV) drones capable of acrobatics and the "tripod in the sky" type drones that companies like DJI have popularized. The former has been very DIY and the latter have attracted companies to build integrated solutions. This new drone from DJI brings an truly staggering amount of innovation and integration to the FPV space: - Low…

DJI digital video has been out for quite awhile now for hobbyists to include in their custom builds. Transmission range is not a valid point because a clean analog video signal and Crossfire outpaces DJI enormously.

The 20 min flight time is a lie, Joshua Bardwell measured 10 minutes hovering. That's extremely easy to surpass on typical light weight 5 inch freestyle drone with a 1300mah battery that cost a fifth of the price of the DJI ones.

It is an impressive drone, but for experienced FPV pilots it's very limiting.

Re: DJI FPV

#12

Post by jonathannat »

klausjensen wrote: post #9

Holy sh*t that is amazing. I can't justify spending 1300EUR on it, unfortunately... :( I really like DJI and how innovative they have been in making awesome consumer products that just work and are super easy to use. I have owned a few.

Interesting, so none of this bothers you

DJI had been supplying drone technology to Chinese security forces in Xinjiang https://www.pcmag.com/news/us-blacklists-drone-maker-dji-ove...

Uighur camp detainees allege systematic rape https://www.bbc.com/news/world-asia-china-55794071

Gang raped, shackled and broken students: Inside China’s ‘horrific’ Uighur detention camps https://www.independent.co.uk/news/world/asia/china-uighur-d...

Re: DJI FPV

#13

Post by matsemann »

The motion controller reminds me of a project I made many years ago, where head tilting of an oculus rift would control the cameras on your drone: https://news.ycombinator.com/item?id=7654141

Also cool that they have been embracing virtual practicing it seems. The original DJI controllers were impossible to pair with simulators, so I had to hack it: https://github.com/Matsemann/mDjiController/

I sold (or basically gave away) all my home-made drone setup a year or so ago, after it being in a box for 3+ years. It was a hassle to set up, and very hard to fly and get good pictures and actually be in control (original DJI Phantom included). Cool tech and fun to hack on, but not very good UX heh. However I would still very much like to fly and film more, but then with some out-of-the-box-ready solutions. Modern ones seem to have obstacle avoidance, better hovering, tracking or point-to-point etc, so I can actually focus on the (for me, now) fun parts of filming the sports action.

What are some good drones for that use-case? DJI alone has a big lineup now, hard to know which one is more fitting. And are there other contenders selling ready to use stuff? Thought GoPro had one but seems like they've stopped.

Re: DJI FPV

#14

Post by magnat »

Dave_Rosenthal wrote: post #4

There has been a huge divide in the drone world between high performance first person view (FPV) drones capable of acrobatics and the "tripod in the sky" type drones that companies like DJI have popularized. The former has been very DIY and the latter have attracted companies to build integrated solutions. This new drone from DJI brings an truly staggering amount of innovation and integration to the FPV space: - Low…

> Low res analog video -> high res digital video

Major benefit of analog video is a progressive degradation of quality as a signal gets weaker and almost instant reacquisition after a complete dropout. I'm curious to see how DJI competes with that on a digital video.

> ~5 minutes fly time -> ~20 minutes fly time

For FPV racing that's rather a downgrade. Ideally you'd like to land with almost empty battery right after finishing the course. Any leftover charge is a dead weight that only slows you down. But then again - I don't think this drone will be used in competitive FPV racing.

Re: DJI FPV

#15

Post by dmitrygr »

50Mbit, 28ms latency wireless link at 12km distance, and on a battery budget, eh? I'd love to hear more, I love science fiction.

Re: DJI FPV

#16

Post by SimpleMinds »

etaioinshrdlu wrote: post #3

Flying in VR is not good for motion sickness.

Anectodal data point, if that helps, tested with 3 people

I own Quest and DJI FPV system (not the drone from the link, but custom built with DJI FPV googles)

- I can get dizzy in VR, but I won't in FPV unless I do a lot of crazy movement like spinning for a couple of seconds. Even when crashing which involves a lot of spin, it's fine - If I watch FPV while someone else is flying, I feel dizzy. It's not as fast as in VR, but still can happen

Friends who tried had the same feeling.

There's something in the connection between visual movement and your control of that movement via stick that helps alleviate dizzines.

Hope that helps in case you were wondering!

Re: DJI FPV

#17

Post by HPsquared »

magnat wrote: post #14
Dave_Rosenthal wrote: post #4

There has been a huge divide in the drone world between high performance first person view (FPV) drones capable of acrobatics and the "tripod in the sky" type drones that companies like DJI have popularized. The former has been very DIY and the latter have attracted companies to build integrated solutions. This new drone from DJI brings an truly staggering amount of innovation and integration to the FPV space: - Low…

> Low res analog video -> high res digital video Major benefit of analog video is a progressive degradation of quality as a signal gets weaker and almost instant reacquisition after a complete dropout. I'm curious to see how DJI competes with that on a digital video. > ~5 minutes fly time -> ~20 minutes fly time For FPV racing that's rather a downgrade. Ideally you'd like to land with almost empty battery right after…

On progressive degradation, perhaps the digital video output could be adapted with an indication of the error rate (which usually get corrected in the background until it reaches a threshold where the errors are too great)

Or perhaps the signal strength or SNR.

These parameters are available but not usually displayed.

Re: DJI FPV

#18

Post by baybal2 »

magnat wrote: post #14
Dave_Rosenthal wrote: post #4

There has been a huge divide in the drone world between high performance first person view (FPV) drones capable of acrobatics and the "tripod in the sky" type drones that companies like DJI have popularized. The former has been very DIY and the latter have attracted companies to build integrated solutions. This new drone from DJI brings an truly staggering amount of innovation and integration to the FPV space: - Low…

> Low res analog video -> high res digital video Major benefit of analog video is a progressive degradation of quality as a signal gets weaker and almost instant reacquisition after a complete dropout. I'm curious to see how DJI competes with that on a digital video. > ~5 minutes fly time -> ~20 minutes fly time For FPV racing that's rather a downgrade. Ideally you'd like to land with almost empty battery right after…

> Major benefit of analog video is a progressive degradation of quality as a signal gets weaker and almost instant reacquisition after a complete dropout. I'm curious to see how DJI competes with that on a digital video.

Waiting for a degradation tolerant codec.

Old MPEGs were, as they had broadcast use in mind, but even 264 blow them out of the water on compression nowadays.

Loss tolerant codec + modern channel coding will likelly outrange analog for quality picture

Re: DJI FPV

#20

Post by wereHamster »

Dave_Rosenthal wrote: post #4

There has been a huge divide in the drone world between high performance first person view (FPV) drones capable of acrobatics and the "tripod in the sky" type drones that companies like DJI have popularized. The former has been very DIY and the latter have attracted companies to build integrated solutions. This new drone from DJI brings an truly staggering amount of innovation and integration to the FPV space: - Low…

High-res digital video has been available to the multicopter community for a long time now through https://www.dji.com/fpv. First released by DJI, later the technology was licensed to others (at least the camera / VTX side of the electronics), se for example caddex vista / nebula (https://caddxfpv.com/collections/dji-1).
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