Discussions

No Mavlink Data from PX4 to OSD

Posted by James Court on June 5, 2014 at 10:35am

I have recently upgraded from an APM2.0 to a Pixhawk PX4. Everything works fine
except i cannot get any Mavlink data into the Minimosd

My Setup:

Mission Planner v1.3.5 build 1.1.5260.33055
APMPlane FW v3.0.3
Pixhawk PX4 (3DR)
Minimosd 2.1 FW. Minimosd-Extra_Plane v2.2 (3DR Non-Clone)
NO 3DR RADIO USED

The Minimosd Boots up fine, says Booting, completes, then just sits there.
The Minimosd has both power jumpers soldered and is powered just from the PX4.

I have spent a couple of days on this now and tried all the setting i can find regarding the SR1 parameters,
but nothing works.
I have also tried using Minimosd v2.0 and even swapping the rx/tx wires.

Can anyone tell me if APMPlane + PX4 + MissionPlanner + Minimosd should work?
And how to get it to work

Regards

James

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pixhawk, mavlink, minimosd, osd, px4

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Replies

James Court June 9, 2014 at 12:40pm

Ok - after many hours of playing around with MinimOSD and MinimOSD Extra versions and

trying every conceivable combination/settings of the SR1 parameters

I have been able to get Mavlink data from the Serial1 port to my PX4 and it works!

My simple solution - downgrade APM Plane from v3.0.3 to v3.0.1

I would seem to me that there is a major bug in v3.0.3
Xian06 June 6, 2014 at 7:15am

OSD Toggle Channel ch 6 for example

Rotation Switching off

CT Tool for MinimOSD Extra 2.4.0.1 Pre Release r788.zip, 479 KB
- James Court > Xian06 June 6, 2014 at 10:29am
  
  Ok i have used the 2.4.0.1 r788 CT and loaded up MinimOSD_2.4.0.1.mcm
  
  and MinimOSD-Extra_Plane_Pre-release_2.4_r719.hex (as it's the latest one i could find).
  
  The SR1 params look like this:
  
  Serial 1 is also set to 57
  
  Iam now getting "No MAV DATA!"
  
  ?
- James Court > Xian06 June 6, 2014 at 7:43am
  
  Thanks
  
  I will give it a try when i get home and let you know
Xian06 June 6, 2014 at 5:55am

Minimosd software version?
- James Court > Xian06 June 6, 2014 at 6:16am
  
  Hi Xian06,
  
  I have tried Minimosd v2.0 and Minimosd-Extra_Plane v2.2
  
  James