Re: [Paparazzi-devel] A problem getting started with an ARDrone 2

[Ori Pessach]

Calibrating the magnetometer helped here. Just a bit, though.

The best result I was able to get today was a stable takeoff, followed about a second later with a landing. the GCS log window (on the bottom right) said something about SAFE, but I can't find a copy of that anywhere in paparazzi/var/log.

Looking at the telemetry logs, it seems like my GPS unit might be faulty - I see the coordinates staying static for long periods of time. I already suspected that the GPS might not be working properly, and I'm waiting for a new GPS unit to arrive. I'm not going to try to fly again with a flaky GPS. 

So, I'm guessing that the vehicle is triggering some kind of a failsafe behavior, but I'm not sure which one. Does that sound plausible?

Ori

On Fri, Nov 28, 2014 at 7:51 AM, Ben Laurie <address@hidden> wrote:

On Fri Nov 28 2014 at 5:10:07 AM Ori Pessach <address@hidden> wrote:

Were you able to fly successfully after calibrating the magnetometer? 

I had the same problem as you when I started with the ARDrone - calibrating the magentometer fixed it.

The native s/w does all sorts of clever stuff with the cameras and sonar etc to self-calibrate. Would be cool to get Paparazzi to do the same, but for now, calibration is required!

 

On Thu, Nov 27, 2014 at 2:49 AM, Thomas Wuensche <address@hidden> wrote:

I have the same problems with ardrone and considered missing
configuration of magnetometer before the flight as potential
reason. However did not yet analyze it further.

Regards, Thomas

Am 26.11.2014 um 22:40 schrieb address@hidden:
> When you say it flies fine using QGroundControl, do you mean with
> paparazzi or another flight controller?
>
> Do you have flight logs of the crash?
>
> Also, airframe files (etc) might provide more clues.
>
> Chris Gough
>
> On 27 Nov 2014, at 2:00 am, Ori Pessach <address@hidden
> <mailto:address@hidden>> wrote:
>
>> Well? Any suggestions?
>>
>> Specifically - is there a way to enable logging in the firmware
>> running on the UAV? Any way to know what "normal" telemetry should
>> look like, so I can begin to understand why paparazzi wants to roll
>> the vehicle to the right, even if I'm holding it level?
>>
>> I don't have a joystick attached to the laptop during the flight.
>> Could the system be using a default value for the joystick reading in
>> that case?
>>
>> In short - what's my next troubleshooting step?
>>
>> Thanks,
>>
>> Ori
>>
>> On Sun, Nov 23, 2014 at 9:57 AM, Ori Pessach <address@hidden
>> <mailto:address@hidden>> wrote:
>>
>>     Hi,
>>
>>     I've been trying to get this to work for a while, and I seem to
>>     have hit a wall. Or rather, the ground.
>>
>>     I modified the rotorcraft_basic plan to get started, rather than
>>     create a brand new flight plan. The waypoints show up in GCS in
>>     the correct location on the map, and I can upload and start the
>>     firmware just fine. I get GPS lock and the PFD updates when I move
>>     the drone around.
>>
>>     The problem is that immediately after taking off, the done rolls
>>     sharply to the right and slams into the ground. Not the ideal outcome.
>>
>>     What might be happening there, and how can I diagnose what the
>>     drone is trying to do? It flies fine using QGroundControl, mostly.
>>
>>     Thanks,
>>
>>     Ori
>>
>>
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