Cellular Shield

Archive
21

Hi,

remember that Sparkfun Cellular shield requires an external power supply.

Bye!

Ste.

22

I bought that shield but when I am trying to check if it’s work, nothing is happens.
I used the GPRS class of FEZ_GPRS , I think so that I need to setup a external power but I don’t know which pin I need to connect.
Now I can see a led that is blinking but it is very low power.

How I can check if the shield work? Can I do the same thing as http://tronixstuff.wordpress.com/2011/01/19/tutorial-arduino-and-gsm-cellular-part-one/ ? A “fake” port to command by computer

23

Ok I’m a stupid :smiley:
Jus to know… how I can setup a PPP connect? I want to use the GPRS with socket

24

I have worked with this shield and the SM5100B-D, it is the worst GSM module (SM5100B) on the market. Beside the AT-Command manual there are no good documentation and no support worth talking about. The protocol stack in this module must have more bugs than an abounded house.

Drop it before you make yourself mad. It is better to use something like this GSM Playground
[url] ​Váš parťák ve světě tvoření | HWKitchen.cz , that is based on the telit GE-863 QUAD module.
It works perfectly with FEZ, here is a good example [url] GHI Electronics – Where Hardware Meets Software

25

This is a good post for me.
I am also looking for a GPRS module.
I fund two modules,
http://www.seeedstudio.com/depot/gprs-shield-p-779.html?cPath=132_134
http://www.sparkfun.com/products/9296
Which one is better?

Thanks

26

Go with the one that has the best documentation and usage. Dont choose a module/shield just because it has more features, decide what you need and stick with it.
I like the Telit based module because they are widely used and the company is open with all kinds of documentation. If you have some programming skills you can easily learn the Python language, and write script that can run directly from the module. This can be a good thing if you are going to use the module with your custom driver, you maybe going to use SPI on different ports on the module, or just make the module do most of the work, instead of letting your Fez to work.