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GPS for ICT

 

Hi,

anyone try to use ATGM336H GPS module which is cheaper than ublox?
I'm curious how to do the poweron? and what code need to change to use it with ICT FW?
I hope anyone tried to do that

Jan
 

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

?
 

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
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
 

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

 

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?
 

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?

 

It will work fine with vcc on pin 7 of the atgm, and I would recommend you put vcc on pin V_bat pin 6 of the atgm but it will work fine without.

/Mikael

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