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For individuals who are round DJI Discussion board and different locations you might have seen a put up relating to the GPS Points with the Mavic 3, this put up makes reference to DJI utilizing a unique GPS module within the Mavic 3 than different fashions. Particularly the KT and KA variants of the UBX-M8030 GNSS Chipset.
The UBX-M8030KT is the professional-grade chipset and the UBX-M8030KA is automotive grade.
All of the M8030 fashions have the identical inside fundamental format of CPU and SRAM together with the quantity, the distinction between the automotive KA variant {and professional} KT model is electrical traits greater than something, that is largely to be used in harsh environments comparable to vibrations and temperatures.
Gadgets labelled as automotive-grade will normally additionally adjust to the electronics council automotive necessities comparable to ACE-Q100 Grade 1. Automotive variants could have another small adjustments however total the efficiency stays the identical because the professions and customary mannequin in regular use instances.
They’re costlier because of the extra compliance however haven’t any actual options drawbacks as is being recommended. It’s the identical Ublox core getting used. As for is DJI utilizing SQI flash on the Mavic 3 it’s unknown right now. That shall be situated beneath the steel shielding and never exterior to it.
There may be a picture being posted round of the Mavic 3 GPS module with the unpopulated IC space and persons are asking is that the lacking flash?
The reply to that may be no as A: it’s exterior to the shedding and it’s additionally not the right pinout for SQI Flash. That’s a QFN package deal that’s not the identical because the flash used. We don’t know but if DJI have added flash for the GNSS as we have to see beneath the protect, it’s value noting that the M8030 doesn’t require exterior SQI flash to retailer ephemeris and almanac information for regular use it’s nonetheless really useful for sure functions.
For example, when utilizing Glonass it’s suggested to have SQI flash for extra configuration information. That will be situated beneath the shielding can and never off to the aspect of the PCB. However at the moment we don’t know what the scenario is. Regardless now we have seen DJI not use flash previously they usually haven’t had points and I might not expect the frequency of them we’re seeing.
The actual fact there’s a battery backup is an excellent signal they’re retaining ephemeris and almanac information regardless. That is all wanting high-quality.
As for that lacking chip it is extremely doubtless a second compass choice, IC for controlling beacon or accent that DJI has chosen to not match. It isn’t uncommon for them to do that and virtually each mannequin has unpopulated areas on the board. It’s completely regular.
Keep in mind DJI usually make a number of variants and even design it with options they by no means use on account of costing and advertising and marketing. This has been the case for a few years. Ultimately, the Ublox GNSS chipset is pretty easy within the sense it handles GPS and that’s handed out over Uart, USB,I2C or SPI to the flight controller. DJI selecting the Automotive variant adjustments nothing main over the non automotive aside from costing them extra.
Moreover, DJI wouldn’t use GPS reminiscence onboard the Ublox chip or SQI flash to retailer information for good options like was added within the final large replace. Any GPS information wanted for good options shall be saved within the companion SOCs working the good photographs in ram on DJI aspect of the Mavic 3. The Mavic 3 is actually not quick on CPU energy or ram in comparison with older fashions that for positive. Proper now there may be approach an excessive amount of rumour on this and there must be way more precise testing.
The issue with deceptive info like saying the automotive module model is the trigger is when individuals see that in different gadgets or future ones they’ll suppose it’s unhealthy. The easy reality is the module chosen is completely high-quality.
That’s to not say although DJI don’t have points or that there’s not one thing mistaken as a result of there clearly is one thing happening for sine customers . This all could possibly be so simple as unhealthy parts within the provide chain, inside interference from poorly positioned wiring or only a firmware bug. It might be a couple of difficulty and never everybody has the identical one.
A few of this will likely nonetheless be a outcomes of the shift to BeiDou and other people having poor protection however we’d like correct information on that, we have to see outcomes from ublox u-center at identical time and site to see what’s happening. There must be correct information not simply assumptions.
It’s quite simple total, DJI have years of designing GPS, however that’s to not say one thing has not bitten them right here, however I’d not anticipate nice public acknowledgements of points, they by no means been their approach. They may quietly repair it if they will or they gained’t and they’ll transfer on. Historical past is plagued by some DJI merchandise with unresolved points, I personal half of them my self .
A last observe on one other change with the Mavic 3, DJI switched from Glonass to BeiDou with the M3 for the primary time on any of their client fashions. This all could in the long run all is probably not a GPS difficulty in any respect merely be regular primarily based on the efficiency of BeiDou, precise person utilization outdoors of China could be very restricted and we don’t have huge expertise to go by.
I’ve been given some attention-grabbing feedback from individuals within the know on the selection to make use of BeiDou and there’s a cause most are nonetheless not transitioning and would slightly stick with an ageing Glonass. Proper now should you’re having this difficulty my recommendation is to open a ticket. Ship logs and even ask for replacements.
The actual fact some nonetheless have points after DJI has launched firmware to deal with it exhibits is a much more complicated difficulty than only a easy bug, maybe it’s going to simply be the way in which it’s the new system, however they’re clearly making an attempt however software program and whether it is hardware-software can’t repair unhealthy {hardware} and if it is a matter with yours particularly you’re higher making an attempt to get it modified.
I’m not saying they gained’t be capable of repair this in firmware but when it was one thing easy they might have nailed it by now.
Hopefully, this explains issues somewhat higher. Nonetheless to place this all to bead I’ve ordered a Mavic 3 GPS module.
We’ll tear this down on the bench and do some testing to see what’s actually happening Extra on this to come back subsequent week. Keep protected Mad.
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