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Topic: Problem with new GSM Shield V2 (Read 358 times) previous topic - next topic

mspe

Hi All.

I have the past 2 years been using arduinos with a GSM shield on for transmitting data to a server. It has been working without problems, but recently i bought some new GSM shields (same version) and are now experiencing problems.

The new GSM shields has the same version number, but look different and the chip on it has a different serial number. (See attached images).
New non working gsm shield front: http://imgur.com/a/tiyv3
New non working gsm shield back: http://imgur.com/a/sWB9T
Old working gsm shield front: http://imgur.com/a/dKUJv
Old working gsm shield back: http://imgur.com/a/dD5gc

The old GSM shield was using a Quectel M10 chip with versionnumber: M10E-04-NCH-STD
The new GSM shield is using a Quectel M10 chip with versionnumber: M10FA-03-STD
The shield has the exact same number, but different components on it (See old vs new pictures).


Im experiencing problems with the connection. The device mostly hangs on the line
Code: [Select]
(gsmAccess.begin(PINNUMBER) == GSM_READY) It simply never gets connected. Seldomly it attaches to the GSM but then it is also having problems. Often this line is returning false,
Code: [Select]
client.connect(SERVER, PORT) Causing no data to be sent.

I've tried running the example "GSMWebClient" and getting the exact same problems. All of this was working fine with the old GSM shield even though they have same version number.

Ive also tried using local sim cards and roaming cards. Seems like the problem is worse when it is roaming.

The arduino i am using is an Arduino UNO, but also tried with a Mega.

What is causing this and any ideas how to fix it ?

Looking forward to hear from you.

Best regards
Mads

ghell2000

I recently bought a shields  with a chip versionnumber: M10E-04-NCH-STD (your old ref)
Unfortunatly it is impossible to do anything with it, so the chip version doen't really matter.
In spite, aparently, a lot of people have problems with this shield no solution has ever be proposed.
My suggestion: the bin!

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