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Unknown location error

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13 comments

  • Jim McAndrew

    That error means that for some reason the DJI SDK has not reported the drone's location to Dronelink. Sometimes you may need to restart the drone and/or Dronelink to get the DJI SDK to wake up.

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  • David Tolson

    Thanks Jim. So wish Id have known that. I had to travel to the pier then had a 5km return walk to the location and today was the last day of fine weather for the foreseeable, wind and rain forecast for the next couple of weeks.:( Still you live & learn. I'm guessing if I had gone into DJI fly first and set the location that would have helped.

     

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  • Jim McAndrew

    Sorry about that! Always best to fly high-stakes missions in a low-stakes environment first to iron out all the kinks.

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  • Ron Phipps

    I experience the same thing. Including trying an on the fly mission.  I got the message that i was 16m away from start of mission but I started the mission and got "unknown location" error, it wouldn't start. I will try again if this occurs and restart. 

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  • Jim McAndrew

    That sheds a little more light on things. There may be an issue when you have a takeoff restriction set. David- can you confirm that you only see this issue when that is true?

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  • David Tolson

    Hi Jim, I didn't try it without a take off restriction as I was on a small deck over the sea I wanted a tight take off area. I will go out and try with and without in my local park and report back but can't do this for a few days as the weather is wet and windy here in UK at the moment

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  • Jim McAndrew

    Thanks. Make sure to try it once with and once without to get a good test in.

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  • David Tolson

    Don't worry, i'll give it a good test as soon as the weather lets me :)

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  • David Tolson

    Hi Jim,

    I moved my mission from the pier head to the local park and again tried to execute with the same small specific take off location. However I did not get the 'Invalid location' message this time but still the mission failed to execute.

    You will see from the short screen capture in the link that when I press play the 3-2-1 take off countdown runs and then I get the error message 'Drone take off location is 0m outside the required take off location' 

    Note the 0m: I was at pains to position the drone precisely.

    https://youtu.be/aNIA-oBZOng

    When I remove the takeoff restriction and set None the mission executes correctly

    Hope this is of some use

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  • Jim McAndrew

    How big was the takeoff restriction zone on the map? Can you post a link to the mission that had it set? Was the Drone positioned right on the edge of the orange circle?

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  • David Tolson

    The orange circle says 20, i'm guessing that means 20ft. I can't say with absolute certainty that I was in the centre or at the edge but I thought it aught to be happy as it did the countdown and reported 0 m. Maybe I should have moved it another foot or so and tried again. I can have another try tomorrow. I had kept the circle deliberately small as this represents the exact take off area I needed on the pier which failed with the 'unknown location'

    https://app.dronelink.com/david-tolson/example-1/plan/EYxxuYawmHLrkzElEqiP

     

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  • Jim McAndrew

    I moved this exact mission plan to our test field and it flew great. I think you must have had the drone just outside the takeoff restriction zone (< 1m) and it rounded the number down to say 0m.

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  • David Tolson

    How's my luck :(

    As the unknown location error never materialised again. In going to try the end of the pier again and see if I can get a good mission from what this has taught me. Thanks for all your help.

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