GPRS seedstudio not responding

End-Of-Life Products & Services Tech support before 2012
#1

Hi,

My GPRS module from seedstudio is not working properly with my arduino Mega.

We try to send AT commands to it through the D7/D8 (newsoft serial) and using an hardware UART (uart 1).
And the SIM900 doesn´t seem to respond to anything.

We have another module from sparksfun SM5100B and it seems to work with the hardware UART so i suppose that this is not an hardware problem on the Arduino Mega side.

I have searched on the forum and i found a big thread (http://www.seeedstudio.com/forum/viewtopic.php?f=4&t=2203) about the problem, but i didn´t understood if someone got to a solution for this problem.

Is this a problem with one lot of modules or is it a recurrent problem?

Does someone has any idea?

Best regards

LPS

#2

Hi,

We have done further testing and we were able to obtain the same behaviour as guan in the other thread ( http://www.seeedstudio.com/forum/viewtopic.php?f=4&t=2203 ).
Send SMS, but not able to receive any kind of confirmation or answering to our sent AT commands…

At the moment no one is answering in the forum…, but i would like to know if this is a problem in a lote of fabricated boards or if it is some strange problem that is happening that as a solution.

Can someone help me/us to solve this issue? Can someone from seedstudios give some support please?

Best regards