Information

ArduCopter User Group

Discussion group for ArduCopter users

Members: 2946
Latest Activity: 15 hours ago

Discussion Forum

Prearm Issues with APM 3.3

Started by Thomas Schmitt. Last reply by Tony Wall 15 hours ago. 9 Replies

Hi,since I use Copter 3.3 Firmware i have a strange behavior that i like to share here. Maybe the one or the other has the same effect or knows how to fix it.Description: If I try to arm my Pixhawk I…Continue

sonar-range unchange

Started by velonica boo 17 hours ago. 0 Replies

hi , i have connected LiDar to pixhawk AUX OUT 5 and 6 ( follow …Continue

Sub 250gram Autonomous + Racer APM Based FPV Micro Project

Started by Edgar Scott. Last reply by KodeIn yesterday. 74 Replies

Hi everyone,I have not been on DIY for a while.  I moved on to racers and mini drones.But I missed playing with Mission Planner and Tower. Since I have been on this site the new FAA regulations were…Continue

Quadcopter - APM v2.8 not recognizing throttle with ESCs plugged in.

Started by Flak. Last reply by Flak yesterday. 8 Replies

I have a quadcopter on a s500 frame with an issue that i just can't seem to figure out.here is the parts list:- turnigy sk3 1130kv motors- hobbyking 20a ubec/escs- apm v2.8- turnigy 5200 mah 3s lipo-…Continue

Comment Wall

Comment

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

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?

 
 
 

DIY Drones Monthly
Newsletter

Groups

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