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Pixhawk and external compass, not compatible?

Started by Cala. Last reply by Eric Kut on Monday. 30 Replies

I'm trying to change the APM to a Pixhawk on my copter, I have a gps and external compass so I didn't ask for a combine one, I was reading instructions and see that says that ext compass isn't…Continue

Pixhawk compatible compass

Started by Tono. Last reply by Eric Kut on Monday. 5 Replies

Hi,I bought my new Pixhawk and I just received today, but I placed this order a long time ago and I bought the one with the power module instead of the GPS/Mag combo from the link below needed in…Continue

What's the difference between ( Absolute , Relative , Terrain ) Alt in MP ?

Started by Marco C. Last reply by Randy Aug 24. 4 Replies

Can anyone tell me how can I fly my copter keeping costant distance between it and the ground, I want to use google earth data to achieve this,  I think it is possible but I have some problem to…Continue

NEW - GPS/INS system - High accurate low cost attitude,position,velocity sensor.

Started by htr. Last reply by Benjamin Trapnell Aug 22. 1 Reply

Hi guys,As we all know high accurate attitude(orientation) , position , and velocity data are very much important for UAV navigation.Air plane is a vehicle which always travel with some considerable…Continue

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Comment by Paul N Braida M.E on April 18, 2016 at 6:30am

both boards have a 3DR stamp on the bottom and used to work. Now the one will upload and verify the firmware but not connect to Mavlink and the other will not upload firmware or anything. Both boards are receiving the required 3.3 volts.

I don't know, maybe just scrap the boards?

3DR do not seem to want to help me on this. Maybe I will forget APM and go with the NAZA controller. 

Comment by bijoux-de-lithotherapie on April 18, 2016 at 1:47am

Hi All :)


Developer
Comment by Randy on April 13, 2016 at 5:14pm

@PaulNBraida,

Maybe try loading Plane onto the broken boards?  It's possible (if you're not using a 3DR APM) that the last copter firmware meant for the AVR boards doesn't fit on it because the manufacturer has put a bootloader that's slightly too large on it.

Also even though you can't connect via MAVLink you should still be able to upload firmware.  The issue is that Mission Planner (I assume this is what you're using) needs to first recognise the board (so it can get the correct firmware) and then it needs the board to be in bootloader mode to actually upload the firmware (the board is in bootloader mode for the first few seconds after being powered).  This means you might need to mess around a bit, connecting and disconnecting the board at the appropriate times.  I.e. plug in the board, push the MP's firmware upload button, disconnect and reconnect the board.

Comment by Paul N Braida M.E on April 13, 2016 at 8:36am

I still need help with my two APM 2.5. On one I can upload and verify firmware but it times out connecting to Mavlink. Error no heartbeat packets received. The other APM cannot upload firmware or connect. It has the same error. The port & baud are set ok. While counting down trying to connect I can see the small amber LED flashing slowly. Voltage on the outside pins of IC 2 is ok. I changed the volt regulator.

I'd really like to use these controllers, not just junk them.

Thanks

Comment by Chris Leech on April 10, 2016 at 7:01pm

ANother thing that happens is that unless you have some aluminum or kapton tape over the area you will probably blow the tiny caps and resistors off the PCB. And believe me, once they are gone, you are in a fix. Get a nice close up photo of this area to see what I mean. If you need some, I can post a few of one (APM2.6) that I am working on.

Comment by Chris Leech on April 10, 2016 at 6:58pm

  @ Paul N Braida M.E, yes you can swap out from another APM, and I have done the surgery. But you must have a hotair rework tool. And it is rather fiddely to be certain. The compass may be purchased new from Ebay in multiples of 5 for less than one from Digikey.  I believe that the M8N will work as a better solution that the Ublox 6N but not the 7. These GPS/Compass combos  can easily be purchased (Ebay), and your biggest task will be to double check the pinout and the 4 and 5 pin connectors.  I am not sure of the  offset that one would make in Mission Planner as one removes the compass from the PCB. This is a major consideration and config with the Naza M Lite and M V2. 

Comment by Cala on April 10, 2016 at 6:32pm

the easiest way is an ext compass, you can use a gps/compass one if you want, that is the APM 2.6

Comment by Paul N Braida M.E on April 10, 2016 at 6:18pm

Can I swap out a compass from another APM?

Comment by Paul N Braida M.E on April 10, 2016 at 6:17pm

oops! I meant external Compass.

Comment by Paul N Braida M.E on April 10, 2016 at 6:16pm

Can I use an M8N compass/GPS unit on the APM 2.5 and configure parameters to external antenna?

 
 
 

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