GPS not getting Fix beyond Mode=1

[Mark Williams]

a soldering problem? I think maybe not, you have soldered before and it isn’t hard to do. it wouldn’t harm it to run the solder over the pins again.

I’m at a loss as to why you are having issues.

You could try and power off the GSM module to see if it makes a difference.
echo -e "AT+CPWROFF\r\n" > /dev/ttyACM0

Have you tried assisted GPS? and see if it maintains a fix?
https://ozzmaker.com/get-a-gps-fix-in-seconds-using-assisted-gps-on-a-raspberry-pi-with-a-berrygps-gsm/

You could also try to use U-Center to get more verbose information to help with troubleshooting.
https://ozzmaker.com/using-u-center-to-connect-to-a-raspberry-pi-with-an-attached-berrygps-imu-gsm/

We may have to send you a new one.

I still see 3 on Amazon.com
https://www.amazon.com/BerryGPS-GSM-Global-Cellular-Modem-GPS/dp/B07TNS2MHW

Amazon is USD and OzzMaker.com is AUD. After conversation, Amazon is more expensive. This is because Amazon charges a lot of fees. But the benefit is that you get it a lot quicker.

We were working on a LTE version.. but that has been put on hold because of COVID-19. We will start on it again soon.

Mark --OzzMaker.com --

[nanunanu]

Thank you for your continued effort to assist me with this.  I took the problem unit on a long road trip yesterday (3.6 hour drive each way) and it worked very well.  It is sitting atop the Pi Zero of course.  The GPS grabbed a fix and seems to have held it pretty well.  I need to get the data into the database to do a proper analysis as far as changes in fix status but eye balling the logged data it looks pretty good.

I am using the assisted GPS feature.  Coded that into the init routine for the GSM service as one of my first efforts to resolve the issue.  It makes no difference with respect to the issues with Pi3 boards.

I will try the U-Center you reference to see if I can get some more data for us to evaluate on the issue.  I will also try turning off the GSM module as suggested.  Of course that would not work as a long term solution as I am using both in my product.  But if it helps us figure out what is going on with the unit I am all in.

I order one of the 3 units from Amazon.  It is actually cheaper on Amazon; must be the current exchange rate driving it down.  I would order more but I am still in development phase and need to get a solid proof of concept out before I dump to much $ into it.

I will post more info as I get through the research on these items.

Thanks again!

Brian

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[PeterP]

Amazon.com = 121.90 USD Inc Tax. (175.31 AUD)
OzzMaker.com = 86.95 USD not taxed (125.00 AUD, which is listed on OzzMaker.com)
Very much cheaper on OzzMaker.com. please let me know if my logic isn’t correct.
However there is a long delay in delivery from OzzMaker.com due to COVID-19, it could take up to 4 weeks to arrive in the US. Before COVID-19, it would take about 10 days.

Regarding powering off the GSM, this is just for troubleshooting.

Please send an email to sales @ ozzmaker.com and ill get another sent out to you.

Peter --OzzMaker.com --

[Author]

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