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  • Al B March 24, 2016 at 12:45pm

    Hi Paul,

    This is an impressively stable test. Did you use the old firmware (px4flow-klt-06Dec2014) for this test flight or did you use a newer version from the PX4 repo?  Cheers!

  • Paul Engel March 17, 2016 at 7:26am

    Hi everyone!
    I'm testing v3.3.3 using PIXHAWK and PX4FLOW. 
    I read reply Goro Senzai and all comments. And quadrotor work is realy cool! But I still have question, when trying fly with coaxial octorotor. Octorotor, when I'm trying take-off in Loiter mode, lost PITCH and YAW control via transmitter.

    Octorotor log in this reply. And quadro in next

    Octorotor.zip

    • Paul Engel > Paul Engel March 17, 2016 at 7:27am

      Quadro log

      Quadro.zip

      https://storage.ning.com/topology/rest/1.0/file/get/3702623736?profile=original
  • Al B March 13, 2016 at 9:09pm

    Randy's post lists the things not supported by the Navio+ and one of them is the Optical Flow.

    Unfortunately, he doesn't give an explanation so does anyone know why it is not supported?

  • Thomas Mueller February 16, 2016 at 3:45pm

    Hello Paul,

    great work. 
    Will we see GPS fusion anytime soon?

    I understand because of the required EKF GPS TYPE setting, Optical Flow in Arducopter excludes GPS functionality for the moment. But in Qgroudncontrol (or how would you call it) it is possible to get fused composition of GPS and Optical Flow data as it determines the most exact position from both.

    Will there be anything like it added? You might even know when :-)?


  • Thomas Mueller February 16, 2016 at 3:25pm

    Hello, 

    the required GPS type setting when using Optical Flow prevents the use of a GPS system and waypoint navigation.

    This is only the case for arducopter, not for qgroundcontrol. QGSC's firmware will fuse the GPS and optical flow data and calculate the most accurate position I understand.

    Do you think GPS will be availalbe in arducopter with Optical flow anytime soon?

  • vasilis February 10, 2016 at 3:28am

    sory because i am a begginer can you tell how can i run the script?

    thanks

  • Horsj February 9, 2016 at 5:40am

    I have the issue whereby the PX4Flow does not work unless my PixHawk is powered by USB first. After spending some time going through various forums for answers, I found an example script to be placed in extras.txt to be executed at boot time.

    I created the file /fs/microsd/etc/extras.txt with the following content:

    if [ -f /bin/px4flow ]
    then
    sleep 4
    if px4flow start
    then
    echo "Found px4flow sensor"
    fi
    fi

    If I do a normal power up, px4flow is still not starting, but if I go in with nsh and run my script manually: sh /fs/microsd/etc/extras.txt, then px4flow starts with: [PX4FLOW] on I2C bus 1 at 0x42 (bus: 100KHz, max: 400KHz)and I get the message from the end of the script: Found px4flow sensor.

    I'm quite familiar with UNIX type operating systems, but am just finding my way around NuttX. It looks to me like extras.txt might not be being executed at startup; Is this likely and what might be some reasons for it not executing? - I could be barking up the wrong tree, but I'm at a bit of a loss.

  • Drew February 9, 2016 at 4:21am
    For anyone trying to fly indoors, I recommend laying down that foam padding that's used under carpeting, it has tons of surface texture (since it's the padding thats made of small chunks of multicolored foam) and it also provides some cushion for crashes.
  • vasilis February 9, 2016 at 3:56am

    hi

    i want a help please

    i have bought a px4flow with ultrasonic and i am trying to connect with pixhawk

    i update the firmware with qgroundcontrol and i set the focus

    i set in misson planner

    FLOW_ENABLE  1

    FLOW_FXSCALER  0

    FLOW_FYSCALER  0

    FLOW_ORIENT_YAW  -9000

    EKF_GPS_TYPE  3

    LOG_BITMASK = 131071

    then i download the log but it dosent work

    the OF.bodyX seems to follow the IMU.GyrX but the OF.flowX not

    do you know what is the problem?

    sorry for my english

    thanks

    printscreen.jpg

    2016-02-08 15-28-41 110.bin.log.jpg

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