ArduCopter User Group

Discussion group for ArduCopter users

Members: 3035
Latest Activity: 19 hours ago

Discussion Forum


Started by Marco C. Last reply by Forrest Frantz 19 hours ago. 7 Replies

Hello,I was just wondering, how much current can a 14 AWG wire handle? can anyone explain and give further detais on this matter? MarcoContinue

quadcopter model dynamique identification

Started by telli khaled. Last reply by telli khaled yesterday. 1 Reply

hello everybody I confused about quad-copter model identification , since the quad is unstable in open loop ,then how can I identify it since is unstable ??? but if I add a controllers in loop of…Continue

GPS Loiter holding issues

Started by Jeff Horton. Last reply by Jeff Horton on Thursday. 7 Replies

Im having trouble with getting the my quadcopter in loiter to keep its position.  It seems like its loosing the signal, but my gcs says the GpsHDOP is at .8 and there are at least 10 sats.  it will…Continue

tarot t4-3d gimbal compability with pixhawk

Started by Nichon. Last reply by Shawn McReynolds Oct 18. 20 Replies

Anyone managed to get pixhawk to control the t4-3d gimbal?i've tried following the same steps in the wiki but that was for the 2 axis gimbal…Continue

Comment Wall


You need to be a member of ArduCopter User Group to add comments!

Comment by Craig on May 28, 2016 at 5:10pm

Guys, someone have this micro gps m8n from Hking?

I need diagram connections and I can't find and nothing write on the board :( , I only find that red isn't 5v .I'm afraid to burn it. (is for connect to a Pixracer) 

open the case, the board should have the labels to which pin goes where.

Comment by Cala on May 28, 2016 at 4:00pm

Guys, someone have this micro gps m8n from Hking?

I need diagram connections and I can't find and nothing write on the board :( , I only find that red isn't 5v .I'm afraid to burn it. (is for connect to a Pixracer) 

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 :)

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


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.


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?


DIY Drones Monthly


Season Two of the Trust Time Trial (T3) Contest 
A list of all T3 contests is here. The current round, the Vertical Horizontal one, is here

© 2016   Created by Chris Anderson.   Powered by

Badges  |  Report an Issue  |  Terms of Service