Optical Flow discussion thread

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- - Cala April 7, 2016 at 12:59pm
    
    Thank's Aaditya, I hope I have an electric issue but not shure, I connected by pwm and powered by esc-bec, perhaps I need an individual bec?.
- Cala April 6, 2016 at 4:00pm
  
  Aaditya: Is your Lidar lite working well? Mine don't look's stable at low altitude.
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!
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?
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.
Developer

Philip February 7, 2016 at 4:12am

Awesome!

Do we have transfer from GPS to flow and back yet? :P
Kyomo Jung February 7, 2016 at 12:00am

Thanks to Goro, Pual, Randy.

I got Optical Flow works well. Here is the video clip fling with OF

P.S : The GPS is for only mag sensor not GPS
Kyomo Jung January 30, 2016 at 5:34am

Hi Paul,

FW : AC3.3.3 RC2

Pixhawk

I'm still struggling with OF.

I found that Lidar is indicating correct alt and OF log is shown in MP's log analyzer ( but not match each other OF.flow, OF.body IMU.Gyro like wiki )

Even with AC3.3.3 RC2 + EKF_GPS_TYPE=3, my copter can't be armed with the message GPS 3D Lock error.

I followed your instruction about NSH and it shows no error

It'll be very appreciated if you correct me ^^;

P.S : Log file is attached here ( https://drive.google.com/file/d/0B713ZYObFHOTM0dncmFFdzJaOVE/view?u... )

2016-01-30 18-16-21 3.bin.log
- Goro Senzai > Kyomo Jung January 30, 2016 at 7:48am
  
  Hi Kyomo,
  
  Your log shows GPS_HDOP_GOOD parameter is not set correctly. You need to set it to 9999.
  
  Alternately, you can disable the pre-arm GPS check by setting ARMING_CHECK to -9.
  - Kyomo Jung > Goro Senzai January 31, 2016 at 2:58am
    
    Thanks Goro,
    
    I found it had not only one problem ^^;
    
    1st, I've set parameters to what you mentioned but still not armed.
    
    2nd, my OF has power issue so I had to power it up via USB first.
    
    ( I have two OF but both have same issue -.- )
    
    3rd, the worst one...my I2C splitter had faulty even though OF looked normal blinking LED signal.
    
    By replacing it with other splitter, it worked.
    
    With the above 3 treatment it was armed in Loiter mode without GPS.
    
    Thanks again Goro and Paul you guys' sharing information.

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Optical Flow discussion thread

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