Keith and I both hope to be able to attend "Thunda Down Under"[1] in
2015, and I've sent the organizers email requesting information on what
it takes to be treated as an on-site vendor.
Of course, it's always more fun to be at a launch when you have something
interesting to fly! Thus, while Keith and I might each show up with a
modest "travel rocket" of some sort... I've started pondering possible
larger "Altus Metrum" group projects. Since transporting a large
airframe to Australia would be a hassle, I wonder if a group project to
build an airframe in-country makes more sense? To that end, I'd be
pleased to know if any of our friends and customers in Australia want to
sign up to help with such a project?
My thoughts would be to engage in some group-think about project scope
and goals, then hope friends in-country would take on the sourcing and
preparation of suitable airframe materials. Depending on who wants to
participate and how tasks get taken up, we might plan to arrive a bit
early to help with any final assembly or other preparations,
installation of suitably fresh Altus Metrum electronics, etc.
So, to all our Aussie friends... does this sound like fun? If so,
please chime in with a reply. I don't expect the email associated with
such a project to be too heavy a load for this list to carry, but we can
always spawn a dedicated lists.gag.com list if I'm wrong.
Regards,
Bdale
[1] http://thunda.com.au/
I was let down by the battery last weekend. While it is probably my fault, it meant I had to swap out the TeleMetrum for a non-trackable flight computer. This led to an hour of whacking bushes so to speak in farmers fields. This is what I got the TeleMetrum to prevent. So I have some questions about the best way to care for and handle the battery. (I’m using the 900 MaH LiPO)
When I last used the device, I’d returned from the field exhausted. I just set the rocket aside with the battery still connected to the TeleMetrum. I knew this would drain the battery, but I thought it would be no worse than that. When I did take it out to charge, I found that I’d actually left it on, so it had been transmitting until it died. Oops. So I put it on to charge overnight before bringing it to the field.
I’d never actually checked it until I got to the field. The battery hadn’t charged at all. It was dead. I put it on a car charger for a little while, but I was getting nothing. So I had to swap it out for another, less capable, computer. When I removed the battery from the foam I had wrapped it in, I also noticed that it had swollen, and was no longer the flat battery I had put in.
So my questions are:
1. Is it normal for a battery to fail after being fully and completely discharged, or do I have a bad battery?
2. Is the swelling of the battery normal? If not, what would cause this?
3. What are some good ‘Best Practices’ for the care and handling of the battery?
David Carter
NAR 98850 Level 2
KC3FEW
When a Telemetrum or TeleMega are in launch mode, they're transmit only so
you should be able to receive packets on both your laptop and phone at the
same time.
-Kevin
-----Original Message-----
From: altusmetrum [mailto:altusmetrum-bounces@lists.gag.com] On Behalf Of
Tim Navickas
Sent: Thursday, July 30, 2015 7:11 PM
To: 'Altus Metrum'
Subject: [altusmetrum] Tele BT
This may be a dumb question but is there anywhere that describes how to know
when the TeleBT is fully charged? Also, Can a TeleBT be connected to the
Telemtrum via phone and at the same time a teledongle be connected to the
same Telemetrum via computer?
Thanks,
Tim
_______________________________________________
altusmetrum mailing list
altusmetrum(a)lists.gag.com
http://lists.gag.com/mailman/listinfo/altusmetrum
Hi:
I flew my Telemetrum v1.2 system today with the Altus Droid connected to
the Teledongle via USB.
The flight was good. Went to 6887ft and only had about 1/4 mile to walk
for recovery.
A couple issues though.
The altimeter did not record the entire flight in the flash memory. Only
the first 75 sec of the flight was recorded. The entire flight time was
several minutes. When I go to save the flight data using the AltOS
application on a computer the download errors out with:
"Flight 8 download error invalid checksum at 0x100000 Valid log data saved".
So, this kind of makes sense because I had the Max Flight Log Size set
to 992 (2 flights). So, if I understand right, it would use only the 1st
MB of the 2MB storage for the flight (no other recorded flights). And
0x100000 is the 1MB location where the data probably just ends.
But at this point in time I can find no way to actually delete that
flight from the altimeter and also the Maximum Flight Log Size selection
in the Configuration panel is greyed out and disabled. I don't remember
for sure, but does the UI normally give the option to delete after you
have downloaded? Since it is erroring out, I'm not getting that option.
What am I missing here? Do I understand the cause of the problem
correctly, or should I be at all worried about a flash failure?
The second issue is that during the recovery phase, the Altus Droid
application as it was giving me the voice updates kept saying "Speed
0.0" and never anything different than that. So first question is, is
that supposed to be vertical speed or horizontal speed? We had so little
wind today that it really didn't move very much horizontally, so if that
is what is being reported, then it might make sense. But if that is
supposed to be vertical speed, then maybe there is a bug there.
Lastly, I know that the Altus Droid saves the telemetry data to the
Android file system. Is there any way to then get the droid app to load
one of those files and replay it like you can with the AltOS computer
app? Or at least get the flight stats? I would find it useful at times
to be able to load one of those files on the phone and at least see what
the basic flight stats were.
Thanks!
Steve
--
--------------------------------------------------------------------------
Steven Saner <steve(a)saner.net> KD0IJP
Andover, Kansas USA
Folks, Keith and I don't try to keep track of who has what serial
numbers any more since so many of our boards go out through
distributors. But if you lost a TeleMetrum in Argonia at a recent
launch, have a look at the attached email from Bob Brown. The board
looks completely trashed, and the memory chip is conspicuously absent in
the photos so there's nothing further to be learned, but I'm sure Bob
will be happy to tell you where they found the board if it's yours and
you'd like to know more!
Bdale
<#secure method=pgpmime mode=sign>
Hello,
Thinking of building a Proline Dominator 4. It uses the profusion tubing
which is fiberglass made with graphite infused epoxy.
Would I need to mount an external antenna as I would with carbon fiber, or
is the airframe transparent enough? I'd prefer to know this before I start
building :)
David Carter
NAR #98850 Level 2
KC3FEW
