Re: [Paparazzi-devel] Problem in sending commands from GCS

[Refik Sever]

Dear all,

Thank you very much for all of your valuable suggestions. I will take care of 
all of them.

We are doing flights near a base station. Today we find that at some area, if 
we press the buttons several times it accepts the command. But outside of this 
area, it does not accept any command. I think that the problem is due to the 
base station. Here, base stations use 900MHz and 1800-1900MHz band. Although 
our Xbee is at 2.4GHz, I think that side channel effects corrupts the signal.

Today, we had a terrible crash at our last flight. I think that it is important 
therefore I will send the details of it in the next email with a different 
subject.

Regards,
Refik

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Konu: Paparazzi-devel Digest, Vol 112, Issue 49

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Today's Topics:

   1. Re: Problem in sending commands from GCS (Loic Drumettaz)
   2. Paparazzi in the Weddell Sea (Martin Mueller)


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Message: 1
Date: Thu, 18 Jul 2013 11:43:37 +0200
From: Loic Drumettaz <address@hidden>
To: address@hidden
Subject: Re: [Paparazzi-devel] Problem in sending commands from GCS
Message-ID:
        <address@hidden>
Content-Type: text/plain; charset="iso-8859-1"

Hi Refik,

I have experienced something similar to you: when trying to move a
waypoint using the CGS.

I could move it 1 or 2 times and then the setpoints would'nt move
anymore. At this time the downlink was still good.. Is there a way to
check the datalink is OK?

About energy control loops, have you seen that the wiki has been
updated recently?

Best regards

Lo?c





Dear friends,

After take of with auto1, we switch to auto2 mode. The plane goes to standby
and circles perfectly. We can receive telemetry also. But in some of the
flights (not all of them), when we send commands (like change altitude or land)
the plane does not receive the commands. Then we manually land.

We have umarim_light_v2 board, ets_airspeed sensor and Xbee modem, and the
session is flightUSB serial 57600.

We changed the example airframe file of umarim_lite and use the energy control
subsystem. Duing compile, it gave some errors due to settings file therefore we
removed some of the buttons in the settings file.  Does it create this error?

We can not change some basic parameters like cruise_throttle. Is there an
example settings file for energy control?

The plane flies perfect therefore I want to continue using energy control. But
I dont know the details of it so we are using it with trial and error. Is there
a documentation of it?

In simulation, there is no problem. We are using version of
v4.9_devel-812-g8f341f0-dirty. I am sending configuration files. Could you
please send some recommendations?

Regards,
Refik
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Message: 2
Date: Thu, 18 Jul 2013 14:52:49 +0200
From: Martin Mueller <address@hidden>
To: Paparazzi devel list <address@hidden>
Subject: [Paparazzi-devel] Paparazzi in the Weddell Sea
Message-ID: <address@hidden>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Hi,

Paparazzi is currently used for operations with UAVs of the Finnish
Meteorological Institute for scientific research on board the R.V.
Polarstern in the Weddell Sea/Antarctica. You can follow the course and
read weekly reports on the homepage of the Alfred Wegener Institut

http://www.awi.de/en/infrastructure/ships/polarstern/weekly_reports/all_expeditions/ant_xxix/ant_xxix6

Martin



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