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Weak Image Transmission Signal with OTG Cable
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19798 112 2017-12-21
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fans36f18b8f
lvl.1
Flight distance : 48665 ft
United Kingdom
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Hello...

Any ideas why i am getting this message when i am connected via oTG cable?

Weak Image Transmission Signal with OTG Cable

For some reason it looks like the Spark is connected using wifi as its also showing a signal strengh.....


2017-12-21
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fans36f18b8f
lvl.1
Flight distance : 48665 ft
United Kingdom
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Weak signal
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2017-12-21
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Wachtberger
Captain
Flight distance : 261509 ft
Germany
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This has been reported by others already and happens with the latest iOS App version 4.1.20.
2017-12-21
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fans36f18b8f
lvl.1
Flight distance : 48665 ft
United Kingdom
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Wachtberger Posted at 2017-12-21 00:29
This has been reported by others already and happens with the latest iOS App version 4.1.20.

Thank you!

Was hoping that was the case
2017-12-21
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Cookster670
First Officer
Australia
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Disable the wireless on your phone first.  That should force it to use the OTG
2017-12-21
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fans36f18b8f
lvl.1
Flight distance : 48665 ft
United Kingdom
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Cookster670 Posted at 2017-12-21 01:48
Disable the wireless on your phone first.  That should force it to use the OTG

I always do..... still does this
2017-12-21
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Cookster670
First Officer
Australia
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fans36f18b8f Posted at 2017-12-21 01:52
I always do..... still does this

Wow...that is strange.  This happened to me the other day when i forgot to disable wifi.  However this coulld have been before the latest updates.  (Don’t remember specifically).  

2017-12-21
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DJI Elektra
DJI team
Hong Kong
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Please use wifi connection instead and OTG cable may cause some problems with our app. Thanks for your understanding.
2017-12-21
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Mildman
Second Officer

United Kingdom
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DJI Elektra Posted at 2017-12-21 02:39
Please use wifi connection instead and OTG cable may cause some problems with our app. Thanks for your understanding.

Elektra, this is terrible advice and very irresponsible...DJI know that WiFi is a problem, especially on Android an in the Europe.   

You are risking people losing their Sparks, will DJI pay for the loss beacuae of your bad advice?



2017-12-21
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Mildman
Second Officer

United Kingdom
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DJI Elektra Posted at 2017-12-21 02:39
Please use wifi connection instead and OTG cable may cause some problems with our app. Thanks for your understanding.

Also Elektra, can you tell us the exact date of the fix on the Android 4.1.18 App, and what will be fixed.
5 weeks since it was released, and no news from DJI.
2017-12-21
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fans94dbb457

Brazil
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Having the same problem here. Just an FYI, using iOS, just upgraded my Spark firmware today as requested in the app. No issues with WIFI, but we all know the problems with this type of connection
2017-12-21
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dansmar
First Officer
Flight distance : 422149 ft
United States
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Here too, was holding off on upgrading the DJI app, but my phone updated automatically - now no more other with iOS

I switched from Android to iOS for the otg - now it's back to Android with 4.1.15

As 4.1.18 Android is hosed as well as 4.1.20 on iOS - otg functionality is going backwards
2017-12-21
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Ccolt1
Flight distance : 289068 ft
United States
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I had same problem with my iPhone after the update
2017-12-21
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S-e-ven
Captain
Flight distance : 5910961 ft
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Thailand
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DJI Elektra Posted at 2017-12-21 02:39
Please use wifi connection instead and OTG cable may cause some problems with our app. Thanks for your understanding.

How about DJI is solving the problems in the latest versions of the app, then?
2017-12-21
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heliman
First Officer
Denmark
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I think your home wifi access point is interfering.
2017-12-22
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DJI Elektra
DJI team
Hong Kong
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Mildman Posted at 2017-12-21 03:50
Also Elektra, can you tell us the exact date of the fix on the Android 4.1.18 App, and what will be fixed.
5 weeks since it was released, and no news from DJI.

Please wait patiently. Our engineers are working on that. Your requirement was forwarded. Thanks for your support.
2017-12-22
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DJI Elektra
DJI team
Hong Kong
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S-e-ven Posted at 2017-12-21 20:13
How about DJI is solving the problems in the latest versions of the app, then?

Sorry that I have no idea about the date of releasing this feature. And our engineers are trying their best. Hope it will be coming soon. Thanks for your attention.
2017-12-22
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dkkbr3
lvl.1
Flight distance : 37014 ft
Brazil
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Same here with last iOS App. I even tried with the last 3 AC firmwares and got the same "Weak image signal" on all of them when using OTG cable. Normal with Wifi.
2017-12-22
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dansmar
First Officer
Flight distance : 422149 ft
United States
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iOS 4.1.20 otg functionality lost here too
2017-12-22
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fanse6bf1271
New
United States
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Same here  "Weak image signal" when using OTG cable. Normal with Wifi.  but range is garbage with both
2017-12-24
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Artur Macau
lvl.4
Flight distance : 256549 ft
Macao
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Hi, i just got my Spark yesterday, didn’t had much time to practice yet, but after updating everything, i connected my iPhone X to the RC using wifi, and was getting a very weak image, super slow and sometimes only half the screen had image and the other half was green…

Today i buy the OTG cable and tried to fly it for the first time and all was good with the cable, strange that the first time it take off, instead of hovering in the same place, it started to drift away, and sometimes would lower the altitude by itself, is this cause by interference on the compass or what?
2017-12-25
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D-r-o-n-e
lvl.1
United States
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Hi on my spark lava red after the update I now have weak image signal transmission everywhere doesn't matter where I fly off from how can I fix this?? Also I'm using ios app and otg cable since wifi always had issues with remote from day 1
2017-12-25
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DJI Susan
Administrator
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Artur Macau Posted at 2017-12-25 06:30
Hi, i just got my Spark yesterday, didn’t had much time to practice yet, but after updating everything, i connected my iPhone X to the RC using wifi, and was getting a very weak image, super slow and sometimes only half the screen had image and the other half was green…

Today i buy the OTG cable and tried to fly it for the first time and all was good with the cable, strange that the first time it take off, instead of hovering in the same place, it started to drift away, and sometimes would lower the altitude by itself, is this cause by interference on the compass or what?

Hi Artur, I've received your message in PM, thanks! Does the weak transmission signal appear in every time when connecting with WiFi? Could you export the flight data for better analysis? Thanks in advance!

2017-12-25
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lannes
Captain
Flight distance : 4465 ft
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Australia
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Artur Macau Posted at 2017-12-25 06:30
Hi, i just got my Spark yesterday, didn’t had much time to practice yet, but after updating everything, i connected my iPhone X to the RC using wifi, and was getting a very weak image, super slow and sometimes only half the screen had image and the other half was green…

Today i buy the OTG cable and tried to fly it for the first time and all was good with the cable, strange that the first time it take off, instead of hovering in the same place, it started to drift away, and sometimes would lower the altitude by itself, is this cause by interference on the compass or what?

The issues your having with OTG are the reason why DJI don't recommend using OTG.

Have you upgraded your phone to IOS 11.2.1 and the DJI Go4 app to 4.1.20
2017-12-25
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DJI Susan
Administrator
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D-r-o-n-e Posted at 2017-12-25 09:03
Hi on my spark lava red after the update I now have weak image signal transmission everywhere doesn't matter where I fly off from how can I fix this?? Also I'm using ios app and otg cable since wifi always had issues with remote from day 1

Hi there, double check, the weak image signal transmission appears when connecting with WiFi, right? If yes, please refer my reply in 23# and offer more data for analysis.
2017-12-25
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dansmar
First Officer
Flight distance : 422149 ft
United States
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lannes Posted at 2017-12-25 19:36
The issues your having with OTG are the reason why DJI don't recommend using OTG.

Have you upgraded your phone to IOS 11.2.1 and the DJI Go4 app to 4.1.20

All previous versions of the app had otg functionality- this is only in the new update - if you want otg support for iOS you have to stay on dji 4.1.18 or earlier - for android you have to stay on 4.1.15 or earlier
2017-12-25
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Artur Macau
lvl.4
Flight distance : 256549 ft
Macao
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lannes Posted at 2017-12-25 19:36
The issues your having with OTG are the reason why DJI don't recommend using OTG.

Have you upgraded your phone to IOS 11.2.1 and the DJI Go4 app to 4.1.20

Hi, thanks for your reply.
Yes i have done all the updates.
Today i made a few more practice flights and worked fine, but most of the time i see the weak video signal error ... but video was always stable, just when i move it up to 50 m i got the video lagging and jumping ..

When i check the wifi channels, i don't see anything on the graph, in this settings should be the signal from the RC to Spark right? of from the iPhone to the RC ?? cause i was using the OTG cable
2017-12-26
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rickmo
lvl.1
Flight distance : 23901 ft
United States
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I updated my Spark firmware yesterday and the latest Go4 iOS app. Now I get WEAK IMAGE SIGNAL TRANSMISSION. I'm using a cable connection to the remote. How can YOU, DJI, tell us not to use the cable when this is obviously the best way to connect? Why did the UPDATE create this new problem and when will it be fixed????
2017-12-26
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rickmo
lvl.1
Flight distance : 23901 ft
United States
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Mildman Posted at 2017-12-21 03:40
Elektra, this is terrible advice and very irresponsible...DJI know that WiFi is a problem, especially on Android an in the Europe.   

You are risking people losing their Sparks, will DJI pay for the loss beacuae of your bad advice?

What kind of advice is that???? The cable is the BEST way to connect. DJI needs to address this.
2017-12-26
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fans221c6033
lvl.1
Flight distance : 9488 ft
Singapore
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Same here with or w/o OTG. Tested on iPhone. Must rsolve before New Year. Either we lose nice photos or our Spark
2017-12-27
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J.G
lvl.4
Flight distance : 172562 ft
Mexico
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Same here with OTG on iPhone, any software update soon?
2017-12-27
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djiuser_CoTaCpY
lvl.1
Flight distance : 185049 ft
United Kingdom
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J.G Posted at 2017-12-27 11:18
Same here with OTG on iPhone, any software update soon?

Just got 4.1.22 on android and the otg still is not fixed you can fly the drone but no telemetry still.
2017-12-27
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djiuser_8wyZRv1
lvl.1
United States
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Santa Claus brought me a new Spark.  I am having the same problem with the OTG cable and receive the "weak transmission signal" when I have disconnected the wifi connection and am "hard wiring" with the OTG.  However, when I enable the WiFi, I do not receive the "weak transmission signal".  I have the latest iOS app and did update the firmware on the Spark when prompted during the authentication process.
2017-12-27
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Cameron Dasso
lvl.1
Flight distance : 6115 ft
United States
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I am new to DJI and have a Spark and Mavic Pro. I have been reading the endless posts about problems using OTG and the replies from DJI that currently they are not supporting it.

I also would like to connect to the contoller with a cable vs WIFI basically for the more positive gimbal control and no irritation image transmission glitches but in reality the connection between the phone and the RC is not a huge safety concern since the Spark will fly just fine without it and the RTH functions, pause button and all that work just fine without the mobile device. That being said it is still disconcerting and upsetting when it happens so of course I would like to eliminate that with a cable. But....

After watching old YouTube videos and reading posts where people also say that they were getting longer flight range with the cable, it seems pretty obvious to me what is likely happening.

The only way you would get any significant increase in the range of the drone by connecting the RC with a cable is that it increased the power provided to the radio. Just providing a wired connection between the phone and the RC would not have any effect on range if the radio signal between the drone and the RC was not increased.

More radio = more power consumption. the Spark has a small battery and already short flight times so sending it out beyond its intended range is asking for trouble and I have read lots of stuff where people were finding those limits with bad results.

My guess is that DJI will release an update re-enabling OTG function when they have restricted the radio range with it plugged in just like it is with WIFI mode now. So the positive connection will come back but the extended range will not is my prediction. That is fine with me because the Spark doesn't have the power or redundancy like the Mavic to be flying over a mile away anyway.

Of course all of this is just speculation based on reading all of this stuff and coming to the only logical conclusion as to why they would intentionally disable the OTG capabilities.

2017-12-27
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Pauxier
First Officer
Flight distance : 1213238 ft
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djiuser_CoTaCpY Posted at 2017-12-27 11:39
Just got 4.1.22 on android and the otg still is not fixed you can fly the drone but no telemetry still.

Where did you get the update?
2017-12-27
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fans36f18b8f
lvl.1
Flight distance : 48665 ft
United Kingdom
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Still having this issue......

2017-12-28
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uhfordboy
lvl.1
United States
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Cameron Dasso Posted at 2017-12-27 19:08
I am new to DJI and have a Spark and Mavic Pro. I have been reading the endless posts about problems using OTG and the replies from DJI that currently they are not supporting it.

I also would like to connect to the contoller with a cable vs WIFI basically for the more positive gimbal control and no irritation image transmission glitches but in reality the connection between the phone and the RC is not a huge safety concern since the Spark will fly just fine without it and the RTH functions, pause button and all that work just fine without the mobile device. That being said it is still disconcerting and upsetting when it happens so of course I would like to eliminate that with a cable. But....

Good points.  The primary reason I would like to use the OTG cable is to increase the reliability of the signal between the RC and the mobile device (iPad in my case).  I viewed several videos claiming they experienced some drops of the signal between the RC and the mobile device if this connection between the two is WiFi.  They state using the OTG cable virtually eliminates these signal drops.
2017-12-28
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Sjd666 1
Second Officer
Flight distance : 3785020 ft
United Kingdom
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I’m getting weak transmission signal using a crystal sky via WiFi.
Dji still tell you use otg it’s  on the dji store for the recommended way to connect the spark to the crystal sky?
2017-12-28
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Katsulas
lvl.4
Flight distance : 820210 ft
Greece
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Before a few day I buy my new iPhone X. When I make all the updates and I try to fly my Spark I see the "weak image transmition error" With the WiFi works but not so good with the OTG cable.
I believe that DJI gives a sollution to this issue ASAP because we need the bird these days for our trips.
Waiting for the update...
2017-12-28
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D-r-o-n-e
lvl.1
United States
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DJI Susan Posted at 2017-12-25 19:36
Hi there, double check, the weak image signal transmission appears when connecting with WiFi, right? If yes, please refer my reply in 23# and offer more data for analysis.

No I was not using wifi Since on day 1 wifi had a bit slow response and was not working properly however Yesterday I did my first flight with wifi linked remote not too far though Everything was working and no Weak image transmission. However I think it be still nice to have a solid cable connection over wifi if you can please make it happen DJI.
2017-12-28
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