Adding Telemetry to the Walkera QR X350 Pro

If you want to display telemetry on your video stream you will need to use an OSD module like minimOSD. However I dont always see the point of this if you already have telemetry connected you can connect your android device/ or laptop and you can view the various telemetry data such as position, altitude, battery remaining on that, but even more useful is the fact that it can read out the values for you so you don’t need to look at it to know your altitude, or remaining battery capacity. This means for video feed is nice and clear so you can enjoy the view from your quadcopter :stuck_out_tongue:

thank you so much i did not know that, so its better to have the telemetry on the droid planner and keep the monitor clear of all telemetry number so i can enjoy the view that i guess it also means less weight on the quad (miniosd) and more flight time thank you !!! so much

I was wondering if it would not be too much a problem, could you maybe give me a link to where I could get the proper telemetry module. Maybe ebay, amazon ? Also is there anything tricky to pair them once it is installed.

if the 350 is sent out on a mission, and it is beyond the transmitter range, will it default to failsafe and return?

last question, is there anything to be aware of when updating or using mission planner?

Thanks for all your help

Grandpa Jake

You can buy an official 3DR telemetry kit from our shop. Otherwise if you prefer to use one of the older versions I can sell you an air module for £12 including shipping, if interested please PM me with your details.

As for a mission beyond transmitter range, this is something that you can change in the settings, but default its usually set to return back home, but you can also override this to continue with the mission if you prefer. You can also set other failsafe options like landing when the battery gets low as well. You can also use the geofence feature which will prevent you form flying a certain distance or altitude away from you which is useful too.

I have one of the newer modules that came with my Iris, but not the other. Is it possible to get just one? I was looking at the instructions you had installing it to the walkera but I notice on the one I have which is the newer style there are no labels on the board when I remove it from the shell. So any help would be very much appreciated. See I am heading in for major surgery next week and wanted to get everything ordered so I have a project to work on as I recover.

the only thing that my module says is on the side ID13

Thank you
Grandpa Jake

I purchased the 3DR V2, running droid planner, I get the voice an error: data link lost, and I don’t see any activity in the Droid device

Have you figured out what was wrong? I am hoping to do this with mine once I know if my telemetry module will work

double make sure the gps,compass and transmitter are on and working mine says that but only when i turn off the transmitter by the way im using the nexus 7 tablet i did the steps above and it work thanks to unmannedtech i would not had been able too do it without them

I connected my X350 Pro to mission planner and the first thing I did was to save the factory settings. Then I went to the Geofence and tagged the box to activate it. Exited and then went to see if the motors would arm. They would not, but if I go back into mission planner and unchecked the geofence everything works fine.

Does anyone have some suggestions or can guide me so I can move in the correct direction.

Thank you

Grandpa Jake

Also Rafaello make sure that the Rx goes to the Rx and tx to tx otherwise it won’t work I tried it with the Rx cable going into tx and I get the data link lost so that is probably the problem however my quad connects to the nexus 7 the only thing I’m able to see in the telemetry display is the radio signal percentage live other than that I get the voice notifications when I arm the drone rth and staybilaze but it won’t tell me the battery level on it or if it has GPS hopefully some one can he’ll with it thank you guys

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The reason why you cant arm in geofence is most likely being caused by the pre-arm checks. Before ir will allow you arm you need to have a solid enough GPS lock. One thing you might want to try to change is the HDOP value in mission planner from 200 to 250, so that the pre-arm check is not as strict in terms of GPS signal. However I suggest that you only try this if you cant get a good GPS lock after waiting several minutes. I had this issue when trying to fly this week so it could be that right now in the UK the GPS signal is not so great for whatever reason.

To change HDOP in mission planner:

  • Config/Tuning --> Full Parameter List and look for the GPS_HDOP_GOOD command. (Click “find” and type “gps” it is much easier to find the command like this)
  • It is set to 200 by default which means 2.00
  • I changed mine to 250 which is 2.50 because sometimes my Hdop can get into 2.3, 2.2, 2.1 etc and still hold a loiter position very well.
  • I would not set it higher than 2.5 though. Over 2.7 or 2.8 you should not attempt any navigational commands such as Loiter, RTl, Auto, Circle etc.
  • Without a good gps lock you should only fly in Stabilize mode.

Thanks, I am going to make that change now and see if it can arm. I do have another question that I hope you can help with. I just connected my Telemetry V1 to my X350 Pro. i then connected the other module to the pc. When I turned it on I noticed a green flashing light and below it a red. On the module that is on the PC it was just flashing green. Once I powered up everything an started Mission planner it seemed to connect as I could see red and green on both modules. I selected 57600

It seems to respond to my mode changes as it speaks the change as i move the switch
but it keeps trying to connect which says in a box. Connecting Mavlink and getting Params (sysid 1 Compid 1 ) that is as far as I can get becuase moments later is say connect failed?

Is there a setting I need to make before it is connected the proper way?

Can you help?

Grandpa Jake

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By changing the HDOP number I was able to get it to arm :slight_smile: Thanks for that help. I had forgotten that when I had my Iris the same thing needed to be adjusted.

I installed my Telemetry V1 according the instructions here and it seems to work, ALMOST ! I get the connecting red light and after I press connect on Mission Planner I her the voice telling me the mode my switch is in. And if I change the switch it lets me know it has changed. But as this is going and mission planner is still loading parameters it will soon fail?

it starts out Connecting Mavlink and shows getting params but it fails just after?

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hey i have the exact problem now i connect and then it timees out ? i wonder why a video would be nice if someone gets it working before i figure it out thanks guys for any help with this

Is this when you connect via the android app, or via mission planner? Did you double check your baud rate you connect with is the same as what you configured on your radios?

i figured out and i made a video tutorial to share with you guys now it works with mission planner and the droid planner app i will be uploading in a few hours on here for every one to share thank you unmanned tech

Concerning GPS lock I observe (in Switzerland) that it depends very much on the sky condition. Also a hand over the upper black part of the frame blocks blinking of the GPS status LED. Which are your observations?

@millonario, when you gona upload video tutorial. Please do that soon, it will be very helpful
for us :slight_smile:

Has anyone figured this out and gotten it to work? I am having the same problem.

On another forum I read that you solved the problem with the telemetry on QRX350 Pro.
Please, if you can share your experience with us