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Getting image, but not telemetry from P2V+

Discussion in 'Phantom 2 Vision + Discussion' started by spudmachine, May 24, 2015.

  1. spudmachine

    Dec 15, 2014
    Likes Received:
    I flew for the first time in a while yesterday and saw the weirdest fault. As usual when there's a gap between flights I now suspect I'm suffering multiple, separate faults as I list below. I had to abandon the flight.

    On my HTC One (which upgraded to Lollipop between this flight and my last flight - this is the only thing I know has changed) I could see the camera view and the image was updating. However, there was no telemetry on the Vision app.

    - Number of satellites was showing as 0
    - The bottom left radar had the arrowhead off to the center left, and it does not update
    - Height and speed indicators both showed "N/A"

    However, in the pre-flight sequence I saw the rapid green flickering to show that the homepoint had been established.

    Also the read LEDs are flashing green and three reds - which indicates GPS and Atti Mode.

    So I assume my GPS receiver is OK. And I assume my WiFi link must be OK too, because I'm getting the camera view.

    I plugged into the Vision Assistant and it's telling me my main controller is 3.08 and no updates.

    (As an aside, the Vision Assistant would not let me log in - telling me I have the wrong password. I clicked on the "forgot password" link, but that produces a 404 error on the DJI website. However, I re-entered the password on my HTC One and it is correct. I assume the Vision and Vision Assistant accounts use the same user name and password???)

    Since the Lollipop update is the only thing I know has changed I tried installed the Vision app on an Android 4 tablet, and I got exactly the same lack of telemetry.

    So now I'm stumped. Any suggestions?

  2. Meta4

    Meta4 Moderator
    Staff Member

    Jan 8, 2014
    Likes Received:
    For starters, the most common cause of losing the telemetry is that one of the 3 cables that come down to the top of the gimbal base is not properly connected.
    spudmachine likes this.
  3. spudmachine

    Dec 15, 2014
    Likes Received:
    I'm now blushing. That was the problem - thanks a million, Meta4!

    The cables looked like they were attached, but the smallest one had come slightly out of its socket.

    I haven't had a chance for a flight yet, but right away I'm getting altitude, the radar screen arrowhead is now where it should be, etc.
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