Hello Joe,
All antennas are outside the frame. My comment about carbon fiber vs.
aluminum was meant in terms of a better grounding plane. Since I am a
mechanical engineer/ control systems guy I apologize for my
ignorance about
RF attenuation and antenna grounding.
Can someone recommend a good overview resource about ground planes
and RF
attenuation for non electrical engineering folks?
Thanks for your help and kind regards,
Marko
On Aug 20, 2010, at 9:17 AM, Gisela Noci wrote:
mmm, Thats even worse than carbon! Any metal is a better shield to
RF than
carbon. Better get ALL antenna outside the frame!
Joe
________________________________
From: address@hidden
address@hidden
]
on behalf of Marko Thaler address@hidden
Sent: Thursday, August 19, 2010 9:38 PM
To: address@hidden
Subject: Re: [Paparazzi-devel] Spektrum Satellite dropping connection
Hello Todd,
Thanks for the reminder about carbon. Luckily, we are using laser cut
aluminum plates for the frame.
Kind regards,
Marko
On Aug 19, 2010, at 12:52 AM, Todd Sandercock wrote:
Also watch out for your standard issues that occur with spektrum
and carbon.
Todd
On 19/08/2010, at 3:19 AM, Marko Thaler <address@hidden>
wrote:
Hello Eric,
Thank you for the information and for writing a new parser. I am
looking
forward to test the new code.
Kind regards,
Marko
On Wed, Aug 18, 2010 at 7:00 PM, Eric Parsonage
<address@hidden> wrote:
Hi Marko
There is a bug in the current parser for both lisa and booz when
using a
satellite receiver. I believe that the behaviour you are seeing is
due to
this bug.
I am currently in the process of writing code to support a pair of
satellite receivers (on lisa) . Hopefully this will be ready in
the next few
days.
Regards
Eric
On 19/08/2010, at 2:09 AM, Marko Thaler wrote:
It would be nice to use the main unit and the Satellite together,
but at
the moment Lisa/L only supports the use of the Satellite RX with
it`s serial
communication protocol. Thanks anyway!
On Wed, Aug 18, 2010 at 6:24 PM, Edixon
Giraldo <address@hidden> wrote:
I was experiencing similar problems with a Spektrum AR7000 Rx. The
reason it was happening to me was because I disconnected the
satellite Rx
and was using just the main unit. As soon as I reconnected the
satellite, I
never lost connection anymore. I don't know if that is your
case, but,
check it out.
________________________________
Date: Wed, 18 Aug 2010 18:11:18 +0200
From: address@hidden
To: address@hidden
Subject: [Paparazzi-devel] Spektrum Satellite dropping connection
Hello everybody,
My setup is Lisa/L with Spektrum Satellite receiver and Futaba
T9CP with
Spektrum DSM2 transmitter module. For telemetry I am using 2.4GHz
XBee Pro
Series 2 modules.
After a couple of hours of setting up and testing all the systems
I have
started to notice the RC link was constantly dropping connection.
When the
problem started to occur the quad battery voltage was 11.4V and the
transmitter was at 9.4V. The funny thing is that when I was
moving the
sticks the link was solid. However, when there was no stick
movement the
connection was dropping out (switching between OK, LOST and
REALLY_LOST). I
have reset the board a couple of times and the problem was
reproducible.
Has anybody experienced anything similar? What is your experience
with
Spektrum system and possible XBee interference (both 2.4GHz)?
I have just recently switched to Spektrum modules because of Lisa/L
support. Previously I was using Jeti Duplex which was rock solid.
Thank you for your help.
Kind regards,
Marko
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