Cellular Radio Module and GPS Module - Driver and Tecnical Documentation

In Cellular Radio Module’s page (http://www.ghielectronics.com/catalog/product/322) I read that “Driver is still under development”.
When driver is available? The driver is necessary for develop with FEZ Hydra Mainboard?
And exist a tecnical documentation about Cellular Radio Module?

It exist documentation about GPS Module (http://www.ghielectronics.com/catalog/product/325) ? And a driver?

I would like send information about GPS position (linked in Hydra mainboard) with Cellular Radio Module via GPRS or SMS. There are some example about this?

Thank’s for all.

Both of these modules are Seeed modules.

There is a Beta driver for the Cellular Radio module, available here:http://www.seeedstudio.com/depot/cellular-radio-net-gadgeteer-compatible-p-976.html?cPath=203

And the GPS Driver can be found in a few places.

  1. Seeed Website: http://www.seeedstudio.com/depot/gps-module-net-gadgeteer-compatible-p-971.html?cPath=203

  2. Gadgeteer Codeplex: http://gadgeteer.codeplex.com/SourceControl/list/changesets

  3. GHI SDK: Most Seed Gadgeteer Drivers are included in out latest installer, which can be found here: http://www.ghielectronics.com/downloads/NETMF/GHI%20NETMF%20v4.1%20and%20.NET%20Gadgeteer%20Package.zip

Any other required documentation for these modules may be found at Seeed’s website. As far as an example goes, I do not believe one exists, but it is an interesting project, and would be simple to do.

The board uses a SIM900 cellular chip. Here’s some additional documentation that I found useful working with this chip:

Spec Sheet

AT Command Manual

IP Application Info

TCPIP Application Info

Thank you for information !!!

Tarannar, I’ve a problem with this link: http://wm.sim.com/Sim/News/photo/201141161239.pdf
Are you sure that is correct?

Dear John Writers: I am also do the same thing like you do.
I have bought the GPS and Cellular Radio module already.
I will test it recently and we can share experience.

Hi John,

I think the SimCom website was down today. It’s up now and the link is working.

Yes, tarannar, now I’ve downloaded PDF file. Thank

Dear Tzu Hsuan, do you know GPS Module’s power specification (peak, nominal and Idle) ?

I have to supply Hydra + GPS + Radio, and I would like know all modules absorption, but I didn’t find specific documentation. Can you help me?

Thank a lot.

You can find the GPS datasheet here, http://www.rlocman.ru/i/File/2011/04/22/1.pdf
I do not have time to test the Cellular Radio Module and GPS Module. I will try it next week.

Thank, Tzu.

Now I’m finding a distributor in Europe for this components. Tomorrow, I’ll buy all products for create a prototype.

If you want, I can give you my private mail to share all experience. Otherwiese we can write with private message in this forum.

Thank again.

@ John You can send me a mail to me by cornetlin at sinotech.org.tw.
Actually, I am not a expert in .NET MF or Gadgeteer.
This forum has many good guys and experts, so the best way is to seeking help here.
You can see a good example here,

BTW, looks like SimCom just improved their website. They have a comprehensive list of documentation on the SIM900 chip page. Look towards the bottom:


You need to be logged in to download the documents.

I got a error when testing the Cellular Radio Module.

Error:‘Gadgeteer.Modules.Seeed.CellularRadio’ does not contain a constructor that takes 2 arguments
How to solve it ?


The Cellular Radio Module has two sockets in Program.gadgeteer.
So we need change the code

cellularRadio = new GTM.Seeed.CellularRadio(4, 9);


cellularRadio = new GTM.Seeed.CellularRadio(4);

I should have my Cellular radio in a few days and can’t wait to build a project with it.

There’s a beta driver available through a link on the Seeed product page, and there’s also a link to the source code. That source code link actually links to the Gadgeteer Codeplex site, but I can’t seem to find the source code for the Cellular module. SeeedStudio also has a forum, so I posted a question where I could find the source code, and this is the answer from SeeedStudio Technical Support:

[quote]Hi dear,

This product is Seeed cooperate with Microsoft.
So here is only driver attach now.
And we also waiting Microsoft’s source code.

Perhaps you can go to the website to consult Microsoft.

Best regards,


What I understand from the answer is that SeeedStudio is waiting for Microsoft to release the driver for a Cellular module. ???

I’m a bit confused…

You are right to be confused. Seeed has not included their driver in the cellular modem in the gadgeteer source. They may be in the same state as GHI, though, and were waiting for the latest core drop to be able to proceed with their driver update. You may want to ask for clarification.

New answer from “SeeedStudio Technical Support”:

[quote]Hi there,

[italic]Yes, the real driver should code from Microsoft.[/italic]
We waiting for some more function what they want to use in gadgeteer.
So just sorry only have BATE driver now.

Best regards,


Looks like SeeedStudio is really waiting for Microsoft to release the driver for Seeed’s Cellular module.

hi, John, the new Cellular Radio module driver has realeased, in this page http://cellularradio.codeplex.com/SourceControl/changeset/view/13308#152479, you can try it!

Thanks Lee2!

[quote]hi, John, the new Cellular Radio module driver has realeased, in this page http://cellularradio.codeplex.com/SourceControl/changeset/view/13308#152479, you can try it!

I just read through the source code, and it looks very promising! Can’t wait to try 8)

Great timing! Fedex will deliver my cellular module tomorrow.

I do have a useless device in mind that will be fun to build!

Awesome, and many thanks to Eduardo for sharing this with the community.

While MS wasn’t building this driver, we were in touch with Eduardo which is where the confusion came, I think.