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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? |
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
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?
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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. |
Re: telemetry channel
Hi all,
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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:
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Simonas K. |
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