Discussions

PixRacer with Ardupilot

Posted by Randy on February 9, 2016 at 4:47pm

This is a discussion to focus the feedback and support of ardupilot on the PixRacer board from AUAV.co.

We believe that all teething problems encountered are now resolved and so we recommend people load Copter-3.3.4 which is available for all multicopters through the Mission Planner's (and other GCS's) Install Firmware screens. Note that because regular Pixhawks are still on Copter-3.3.3 the install icon may show Copter-3.3.3 but rest assured, Copter-3.3.4 will be installed (you can check the version by looking at the very top of the Mission Planner).

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apm:copter, arducopter, ardupilot, pixracer

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Replies

- - - - Otto Küng > Cala July 1, 2016 at 12:12am
        
        Hi Cala,
        
        The same with my Frame F550, Mots 2212/920 (original DJI) 1.8 kg
        
        Hoover with 45%
        
        Has nothing to do with oneshot or hight kv motors.
        
        I will post it on the recommended link.
        
        Otto
        
        Otto Küng > Otto Küng June 28, 2016 at 4:36am
        
        Another 2 Pics
        
        Pixracer left.jpg
        
        Pixracer right.jpg
Otto Küng June 26, 2016 at 1:37am

With MP Beta it was possible to increase the Params.

But now with the same Params and Frame as with Pixhawk and FW 3.3.3, the behavior is verry strange in Loiter Mode.

Even with 9 Sats and hdop 0.9 it moves around slowly in a range of 10 m, +/- 5m Altitude and up to 30° Yaw.

The Vibs are lower than 9. Hexa F550, 1.8 kg, 3S. Pixracer R14, FW 3.4-RC1

Parameter Juni 26.gif

https://storage.ning.com/topology/rest/1.0/file/get/3702258676?profile=original
Marcell Kovacs June 25, 2016 at 9:29am

BTW.. is there a pin supporting a sonar module producing pwm/analog signal? TY:)
Marcell Kovacs June 24, 2016 at 10:18am

Checked my spektrum satellite and Pixracer's RC_INPUT with a logic analyzer. What i noticed is the INPUT pulses slowly. If i connect the satellite, i cant see any difference. But.. if i power the satellite alone, it produces some sort of a fast serial transmission on its data port.

Am I using the wrong port or need to change some params?

(see images attached about logic analyzer screenshot)

rc_in-record.PNG

satellite-out-record.PNG
Otto Küng June 22, 2016 at 2:33am

Pixracer, AP 3.4-RC1 MP 1.3.38 Param Issue

In MP Config/Tuning-Extended Tuning the Values for Rate Roll/Pitch can no be increased above the default Values (P 0.135, I 0.090, D 0.0036)

It is possible to recuce it but not increased.

May be the defaults are enoughe high for Racers but not for a F550 with 2 kg.

My values with a Pixhawk and the same Frame are P 0.18, I 0.18 and D 0.0145.
- Scott W > Otto Küng June 22, 2016 at 5:56am
  
  I have trouble w/ the tuning screen at times, too. But if you enter the value in the full parameter list, it will work.
  - Cala > Scott W June 22, 2016 at 11:01am
    
    With beta, work's
  - Otto Küng > Scott W June 22, 2016 at 8:31am
    
    Hi Scott W, thanks for your reply. I will look for it in the list.
    
    Does the Tuning with Poti on the TX Ch6 work?
- Cala > Otto Küng June 22, 2016 at 4:40am
  
  Did you update M Planner to beta?, if not, try that.