Connecting to 3G via ppp without Hologram SIM

[Jake]

Hello,

I tried your tutorial https://ozzmaker.com/berrygps-gsm-using-gps-and-connecting-via-3g-2g-using-ppp/ to connect to internet using a vodafone SIM card which has no username and password. Of course I changed the APN - in my case to "gprs.is"

As the ppp connection did not work (on one Raspberry Pi, nothing happened, another crashed when I started ppp with "sudo pon"), I tried to set the individual AT commands to SARA u-201 in minicom according to the tutorial https://ozzmaker.com/get-a-gps-fix-in-seconds-using-assisted-gps-on-a-raspberry-pi-with-a-berrygps-gsm/:

AT+UPSD=0,1,"gprs.is"

Which gives me: OK

AT+UPSDA=0,3

Also gives me: OK

The other GPS related commands seem to work.

However, no internet connection is available. What steps am I missing? Do you have another example until completing 3g connection with a ordinary SIM card? Or can I use the hologram Python SDK for other SIM cards aswell?

At the end, I want to run 3G and GNSS both via USB without using the i2c headers to the Pi.

I would be happy for help, because for our student project we are running out of time.

 

 

[PeterP]

after the commands above, what are the results of these two commands?

AT+UPSND=0,8
AT+UPSND=0,0

The first checked the connection status and the second shows the ip.

And then do this one to show what carrier you are connected to
AT+COPS?

• This reply was modified 1 year, 2 months ago by PeterP.

Peter --OzzMaker.com --

[Author]

Posts