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

Edgar Scott April 7, 2016 at 4:21pm

Here is a clip of it flying, or trying to. I can only assume the massive wobble is the ESC calibration.
Throttle stick seems erratic too.
- Phillip Kocmoud > Edgar Scott April 7, 2016 at 4:45pm
  
  This would seem to be an ESC calibration issue. Your motors should spin when armed and the throttle at its minimum stick position.
  - Richard Kennedy > Phillip Kocmoud April 7, 2016 at 4:54pm
    
    There is an adjustment on that at least on the APM code. You can have them spin slowly or not at all... at least that's what I remember.
    - Richard Kennedy > Richard Kennedy April 7, 2016 at 5:01pm
      
      or if it's in throw mode they won't spin by default ... I'm sure it's irrelevant to the issue.... but just saying...
  - Edgar Scott > Phillip Kocmoud April 7, 2016 at 4:52pm
    
    Thanks for the quick response
    
    Thats what I thought too...I don't see any way I can do the ESC calibration since all at once is not working thru the APM firmware and PixRacer.
    - DirtCreature > Edgar Scott April 7, 2016 at 5:51pm
      
      What brand ESCs are you using?
    - Phillip Kocmoud > Edgar Scott April 7, 2016 at 4:54pm
      
      It is possible to calibrate each ESC using a PWM receiver.
      - Edgar Scott > Phillip Kocmoud April 7, 2016 at 8:50pm
        
        It seems to be slow to react too, when im throttle down fast, its still spinning up sometimes
        
        Developer
        
        Randy > Edgar Scott April 8, 2016 at 10:00am
        
        My guess is you're using "latest"? So the code was loaded by pressing Ctrl-Q on the MP's firmware install screen? If that's the case then you're beta testing Copter-3.4 and it's modified motor spool up logic. That logic is that it has a 0.5 sec spool up (or down) time. Perhaps we need to allow that time to be higher or lower depending upon the frame (big copters probably want it slow, small copters want it really short).
        
        Edgar Scott > Randy April 8, 2016 at 10:15pm
        
        Randy, I was using the normal download firmware, I did not know about Control-Q till now. Says "Trunck Firmware 3.4" should I be using that?