Pixhawk with SONAR Vertical Drift in Alt-Hold

Hello,

Tarot 680 Hex, Pixhawk, EZ SONAR

I've never had a problem with altitude hold or GPS hold functioning in the past. I added a Botix sonic ragefinder that I have used on an APM frame without issue. Now my hex cannot stay at constant altitude and tr

Ive lost my LEGO done in Auto, got a 3d lock after 20 min of walking, have tlog

I've lost my LEGO done in Auto, gopro attached :(

I got a 3D lock after 20 min of walking, have tlog but right as I did the battery died on phone before I could find it.

Once I got the 3d lock I was sure I would have all I needed so I went home,  I nev

How to find TLOGS in Tower and not die in the attempt (for Newbies)

In DP you find easy logs in Log folder but if you like Tlogs in Tower you have to look here

Equipo\Nexus 7\Internal storage\Android\data\org.droidplanner.services.android\files\tlogs\org.droidplanner.android

Not looks so intuitive :( ; any possibility

Cannot connect 3DR radios to Tower on Android

I don't know if it's a MP/AC version change or that I reinstalled the drivers (1.9) for the radios.

Are there certain settings the radio must have in order for Tower to work? It worked fine for months (Droidplanner 2 as well).

RTL activated but not sure why

In one of my auto missions I am getting a RTL activated, reproducible every time and i just don't know why.  I look at the logs but I'm just not verbose enough with them to pin point it.

I have flown the mission 4 times and all 4 times the "First Only

Arducopter 3.2 on APM2.5 -Problem with drone lurching its way between standard waypoints

I need some advice. concerning tuning out a problem I have with my 800 hex stalling pulling up then continuing forward between way points during standard (no splines) waypoint missions even in no wind conditions.

I have tried reducing the WP Horizonta

Max window on radio settings help to change

I didn't find much information about this setting, I read instructions that at Low latency default is 33 http://copter.ardupilot.com/wiki/common-optional-hardware/common-telemetry-landingpage/common-3dr-radio-version-2/ but if I check standard Mavlin

OPTICAL FLOW ADNS3080 (How to Determine if its working)?

Hi Guys,!

I searched if this question is already been asked, but i couldn't find Sorry!!

I just Installed optical flow on my APM2.6 and use python to adjust the image as per the instruction on 3dr main site how to install.

However, i try position hold,

Simulator

Do you guys have simulator for quadcopter  ? link 

Arducopter kept yaw-ing and crashed

hey guys, anyone here that could help me understand why the copter kept yaw-ing and yaw-ing for 5mins

until the wind pushed it and started spiraling and ended in a power line pole ?

(lost all connection, no taranis, no telemetry, nothing)

APM 2.6 runnin

Question about 3 Important Parameters

Hi friends!
I'm doing an experiment with APM and I need to know the order of magnitude of these parameters: 
1. Noise of accelerometer and gyros. 
2. Time delay between sending a waypoint to autopilot till the autopilot recieves it.
3. Lag of regular rot

GPS errors occur in Auto

for some reason I seem to get a lot of GPS errors in Auto mission.

Im not really sure what's going on but from log I think the GPS may be getting an error?

Also seems to have a flight more error

APM 2.6

2015-04-21%2011-17-55.log

Adding Bin
2015-04-21%2011-

Capstone Search and Rescue Project. Help Needed to Finish!

I had initially raised this question in Arducopter 2.x group yesterday but since no one replied and I really need help, I am posting this question in the Arducopter User Group.

Here is the situation:

I am doing a project to augment Search and Rescue op

Quadcopter X

Hi everyone. I am new here. I have apm 2.6 and 3DR quadcopter x. I finished assemblying and setup arducopter programs to apm 2.6 via missionplanner. At last, i connect to battery and give the throttle. At this point quadcopter don't fly, always pull

A New Flight Mode

I was flying my quad yesterday and It nearly hit me!  This is simply because I'm a pretty rubbish pilot, but on the upside I am getting better at flying these great machines.

This got me thinking......

....  The APM code has geofencing to prevent the q

Gps Fix

my gps is happymodel.I keep trying but i can not gps fix

altitude shoots up in alt_hold

For anyone experienced at interpreting logs, see attached...

I'm assuming that I have a vibration issue, just wondering if anyone has any other opinions.  Stabilize mode first, then switched to Alt_hold.  There are times when the Acc plots are ok, but

art-tech e-fly 6c iii

I have art-tech e-fly 6ch iii, my remote controller is reverse(right=left-------lef=right) How can I solve this problem.

Arduino core liberaries are not accessable????

Hello,I want to use the functions digitalWrite() and analogWrite() which have been defined in the arduino core liberaries. But the problem is that once code is compiled the modified compiler of arduino for ardupilot excludes these core liberaries fro

Waypoint added thousands of miles away