It has nothing to do with the size of the sensor. It is the amount of data in a 4K image that makes the difference. The CPU needs to process all of that data and that requires a high cycle rate, power and generates more heat.
mavic mini and smart controller
- Thread starter herrmann-s
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BJR981S
Well-Known Member
That is technically not possible. You must understand that the 2.4Ghz band and the 5.8 Ghz band are Electromagnet Spectrums they are not wifi or any specific protocol. Wifi just happens to be in these bands as they are defined for general consumer use. The Smartcontroller only outputs Occusync Digital Protocol. The same reasoning why you cant view your DJI drone data on Analogue Racing goggles. Even though they are the same 5.8Ghz Band.
However firmware could be updated in the RC side to utilize WiFiE as well as Occusync 2, assuming the RC hardware has enough resources to accomplish both.
Note that the SC still doesn't support OS1 which would have been more plausible so there may be more to the hardware.
To improve performance, many protocols able to be implemented in software are implemented in hardware specialized for the task. Higher end switches and routers have done that for years.
Note that the SC still doesn't support OS1 which would have been more plausible so there may be more to the hardware.
To improve performance, many protocols able to be implemented in software are implemented in hardware specialized for the task. Higher end switches and routers have done that for years.
BJR981S
Well-Known Member
Yes there is more to the Hardware. The transmitter chips for these units have the protocol imbedded (Hard Wired) in the chip itself. That's why you find 4 in 1 2.4Ghz radio chips to allow the use of Multiple brand radio systems, as add ons. Check the deviation website for more details.
These chips arn't processor and FW controlled that are an ancillary function.
BJR981S
Well-Known Member
p.s. High end Network switches do not allow the change of protocols at the Wire level. You can change protocols at higher layes e.g. TCP/IP TCP/UDP. These can be modified by Firmware. But the basic link layer is dedicated in the hardware.
Cheers
ASIC processing vs CPU processing.
There is some firmware control in the ASIC, but not as much as what the CPU runs. CPU based switching/routing is the last resort which you try to avoid.
There is some firmware control in the ASIC, but not as much as what the CPU runs. CPU based switching/routing is the last resort which you try to avoid.
What do you think, will the Mavic MINI be controllable with the DJI Crystalsky ? Is that technically possible at all?
kloogee
Well-Known Member
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There is no reason the CrystalSky shouldn't be able to work. It is essentially just another Android based tablet. However, DJI hasn't provided any updates for it in a long time and is even far behind on the version of DJI Go 4 that is available on the CS. I'm pessimistic that they will choose to release the new DJI Fly app for the CS that would be required to control the Mini.
i highly doubt dji went as far as to make a propitiatory wifi protocol... whatever wifi transmitter is used in the SC would probably work just fine. but, it is what it is.
thanks for asking the question. their reply is pathetic. we bought a slightly superior controller under the impression that further mavic models would be compatible. what if mavic 3 comes out and they say the stock controller is already figured into the price like they did here. there is no way the smart controller couldn't easily have been compatible. unfortunately there is no one else near dji yet but if there were i would cross over out of principle. i'm really disappointed they did this. they can get away with it prob because most ppl don't own the smart controller. a good company would see the error in judgement and fix it.
AnzacJack
Australian Defence Veteran
I have the smart controller and love it. Ill also be getting the mini at some stage, but Im no way put out that these two will not be compatible. The hardware is in different classes and im realistic enough to not expect the smart controller not o be compatible with a cheap introductory drone.
As long as it is compatible with any future phantom of mavics that are an upgrade to what we have, ill be happy. If the day comes and this is not the case, then ill be shouting from the tallest building.
As long as it is compatible with any future phantom of mavics that are an upgrade to what we have, ill be happy. If the day comes and this is not the case, then ill be shouting from the tallest building.
It isn't the amount of data that is the issue either.
Which CPU are you imagining might be the thermally crippled bottleneck?
Intel's Movidius Myriad 2 computer vision SOC wouldn't even work up a sweat. 4 K 60fps is natively supported, as is 13 Mpixel at 48 fps being the maximum. As to power consumption- 500mw at full processor load.
The limitations aren't physical size or heat as you are assuming. It is more likely product placement and marketing. Never a good idea to put your higher end features in your entry level products.
AnzacJack
Australian Defence Veteran
Correct. They want to sell this drone as an introduction to new players who will then upgrade to something better.
It is more than just the CPU and labeling it as an issue with heat from processing is oversimplifying the issue but there is no reason to go into great detail as we'd then see a ton of posts nit picking the whole issue.
The prior Mavics have _huge_ (and heavy) heat sinks on them because their 4k abilities generated a lot of heat. The Mini also has a much smaller battery and 4k cameras draw a lot of power (generating more heat in the battery as well). It would also make sense that the components in the Mini are placed much more closely together which generates more heat.
Even the Tello generates lots of heat and it isn't even 2.7K. It will shut off due to heat if you don't fly it soon enough, and the bottom is quite warm.
We don't need to go back and forth with guessing games or rely on uninformed assumptions. Theses are exiting times. We can see DJI moving from Ambarella SOC for vision processing to the Myriad. Myriad has been enabling the OA and smart vision features Iin DJI products since the Phantom 4, took on the role of he main imaging pipeline in the spark and we saw with the Tello the flight controller software runs on the Myriad platform as well.
Of course you are correct to suggest heat, available space, power consumption and other factors may present a limitation to 4K implementation however to progress with that argument necessitates we remain ignorant of what capabilities the current generation vision processing SOC provide. The factors you rely on as being limitations are not an issue.
What is likely the reality here is that it would be silly for DJI to incorporate the higher end features of the top of the range models in their entry level products.
Absolutely. We now know from samples in the wild that have been opened up that the Mavic mini flys an Ambarella H22 SOC. 4K@60 FPS, HDR and H265 are natively supported. No chance DJI will ever provide support in firmware. It’s all about maximising sales in all the model catagories. DJI knows that people won’t choose to not by a mini because of lack of SC comparability and that those who buy the SC probably need it for a bigger drone in the range.
Yes, although it may be possible, it’s unlikely from the sales income perspective, I agree. Similar to Apple soldering in their ram chips now...
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