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Re: GPS for ICT

 

Hi,

I saw that pin 7 of atgm336h is not connected and pin 6 is Vbat on a PCB of Yo3ICT 6,5 is not connected.?
datasheet says 7 NC but on ICT is connected to VCC?
is that the problem?

Jan

On Fri, Feb 19, 2021 at 7:27 PM Mikael Dagman <mikael_dagman@...> wrote:
Hi, that "Antenna Open" is ok, make sure pin 5 floats or/and that its not pulled low, any pics of the setup or schematic?


BSS99

 

hi,

I saw that also BSS99 schematic is available any one know how to program it because there is 16mhz if I'm right?
Is there any arduino files?

br Jan


Re: telemetry channel

 

I think I understood what the problem was. Heavy snowfalls interfered with the operation of GPS


Re: telemetry channel

 

Please apologize.?
I supposed Mikael wrote me message about our previous email.
For Mikael: now I can confirm, this is the effect of Etna's dust!?
Have a nice evening all.
Roberto?

Il Gio 25 Feb 2021, 19:44 Mikael Dagman <mikael_dagman@...> ha scritto:
That GPS antenna looks way to long, it should only be 46mm long.?


Re: telemetry channel

 

Consider I used 46mm long beginning from the top vias, where you see the soldering.
I tested many times the pcb outside, with integrated gps antenna, but that didn't work.
I also switched power off and on, and no work.
When, finally, I soldered antenna upside, it worked fine.
So, that was really no good idea to put integrated antenna. Probably too low trace cross section surface.
R


Il Gio 25 Feb 2021, 19:44 Mikael Dagman <mikael_dagman@...> ha scritto:
That GPS antenna looks way to long, it should only be 46mm long.?


Re: telemetry channel

 



everything seems to be fine


Re: telemetry channel

 

That GPS antenna looks way to long, it should only be 46mm long.?


Re: telemetry channel

 

Hi.?I am using a 3.3 volt arduino stabilizer. the arduino board is connected to the USB. antenna - a guitar string, all this is in the open air outside the window


Re: telemetry channel

 

Hi, I have never seen this behavior under countless hours of testing and flying the firmware, first thing that strikes me is that the board might have lost gps sync, how are you testing it? maby put it outside on battery power and see if the problem is still there.

gps antenna? what are you using?

/Mikael


Re: telemetry channel

 

The first few hours the tracker works fine, then it starts transmitting every 2 minutes. I tried both original firmware and Mikael's firmware, no difference. This may be due to the fact that I use U-blox MAX-M8Q modules? Or is the problem something else? who faced such a problem?


Re: GPS for ICT

 

Hi, that "Antenna Open" is ok, make sure pin 5 floats or/and that its not pulled low, any pics of the setup or schematic?


Re: HABalloon Project

 

Yes, this will work fine with the ICT code/tracker and also most likely with the upcomming qrp-labs wspr board.

/Mikael


Re: HABalloon Project

 

Mikal,

This will work with the ICT3 tracker??

Paul
KD4GUB


Re: telemetry channel

 

Hi, Good to se those files come to use :)? its my pcb design and take on the ict fw, the code is the most updated one and is likley working as good or better then W5KUB code, if Im correct they stil use original ict code which have a problem with wspr timing/encoding, I presented the new improved code for KUB in oct/nov they did not for the follow flights implemet it, though a bird wisperd they might have had help setting it up on later flights, as those files in my git using interupdriven timing of the tx it will at least be on par with best out there and its much simpler to build/assamble as it have less components to solder and is as light/small it can be and you have the option to use the small or large 328 ic.

A big tnx to Eduard YO3ICT, that helped me implement this new interupt timing into the code after I found the fix a couple of month ago!

Also tnx to?RAJlab at??where I found the timing code. Its compatible with the ict board as well with minor tweek of the code

73 and good luck!
/Mikael


Re: GPS for ICT

 

I am getting "Antenna Open" in the ATGM $GPTXT string.? I do have an antenna connected and am not using an external?LNA so is this correct?

The ATGM is not seeing any sats.? I have tried several ATGMs where UBLOX works.? ?I am not sending any initialization strings, just powering up and dumping the output.??

Suggestions?

Thanks - Martin W6MRR

On Mon, Feb 15, 2021 at 6:07 PM col_bob_bush <airdry@...> wrote:
I have checked the atgm module to 64km altitude with Hack RF and it tracks all the way up there, as Mikael said, without high altitude strings being sent to the gps.
Dave VE3KCL


Re: telemetry channel

 

Hi all,

Appreciate all the useful information which is shared here in this
group. We are going to fly the ICT v5 tracker based on the PCB designs
and code at - but, as I understand, new
W5KUB's are flying with newer code (and possibly updated versions of
the PCB).

Maybe you could suggest how to get the subscription to the picoballoon
group approved?

Thanks,

On Mon, Feb 1, 2021 at 6:40 PM Graham, VE3GTC <colonelkrypton@...> wrote:

Konstantin,

there is a group called Picoballoon /g/picoballoon which is much more active than this HAB Balloon group. You may find an answer to your question there more quickly than here.

cheers, Graham ve3gtc


On Mon, Feb 1, 2021 at 2:17 AM Konstantin via groups.io <maro_n9@...> wrote:

Hi everyone. I have assembled several ICT trackers with standard firmware (using timing3). Did some tests using a 50 ohm resistor instead of an antenna - works great. Tell me how to find out which telemetry channel is free and which one I can use for tests with an antenna so as not to disturb anyone. Is this list still up to date? - . Are there any instructions for adding to habhub? Sorry for my english, I use google translate.
--
Simonas K.


Re: ICT Tracker current consumption

Chuck KG5CA
 

Konstantin,
Thanks a lot!? Helpful to know.
--
Chuck / KG5CA
StratoCasters


Re: GPS for ICT

col_bob_bush
 

I have checked the atgm module to 64km altitude with Hack RF and it tracks all the way up there, as Mikael said, without high altitude strings being sent to the gps.
Dave VE3KCL


Re: GPS for ICT

 

I have been using the ATGM without issue, no setting needed to allow high altitude operation.
?
Power saving by Power off the gps and leaving battery backup powered works well.
?
Cheers
Kev


Re: GPS for ICT

 

Hi Jan , the atgm gps module are plug and play, just remove all lines containing any gps strings in the code and it will work great! :)

/Mikael

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