Comment

Comment by srinath mallikarjunan on August 8, 2012 at 1:07am

Suppose you have 2 usb 3G modems, connected to 2 laptops. Can you exchange files/video between the 2 laptops without involving the internet.

I know a 3G video call is possible between 2 phones, so i guess it should be possible to stream video from 1 laptop and view it on another. The reason i would like to avoid the internet layer is that it seems unnecessary. We just need reliable point to point communication/data links for a uav

Comment by Tommy Larsen on August 7, 2012 at 10:30pm

I think maybe we can find the solution on this link

http://www.drupaler.co.uk/blog/installing-3g-usb-modems-linux/497

Comment by Alan on August 7, 2012 at 3:19pm

Will

It may be the Sim Card slot is not functioning but that is not important. Yes they connect to a computer but that is what the Rasberry Pi is. I agree that if you are using Windows then you use the included software, however I see no reason why software cannot be written for the Rasberry Pi computer to access the Dongle as it uses a simple USB interface.

Comment by Will Snodgrass on August 7, 2012 at 1:02pm

I have one of these USB dongles from verizon (3g CDMA) although it does have a sim card slot....but I always thought they just converted a gsm board an it was not functional. 

Either way I believe it uses your computer (and the included software) to operate....

Comment by Alan on August 7, 2012 at 6:13am

Hi Tommy

Good work you are halfway there. I was going to put the scope on the dongle but it is probably easier to use a terminal program in the Pi.

I am about to order a Pi but with a bit of luck you will have it sorted before mine arrives.

Comment by Tommy Larsen on August 7, 2012 at 6:01am

Ok, i understand. In fact it's a great idea! I just got my raspberry pi last week, and i have found the TTL UART on this to connect to UART0/2 on my APM2. Share that UART to IP and connect via TCP in mission planner. I planned to use a 3g router for my Rapberry pi, but why not connect a USB GSM dongle directly to my Raspberry Pi ! I will try this :)

Comment by Alan on August 7, 2012 at 5:45am

Sorry my previous reply was cut short

Alan, is this a GSM dongle ?

Yes they are a complete GSM phone without the screen and battery and plug into the USB port of a computer generally for internet access. They take a standard mobile sim in fact you can take the sim from your phone and use it in the dongle if you have a data allowance. All the major carriers in Europe sell them either on contract or PAYG. They are very inexpensive mine was £3 from Vodafone. I have also used mine in Spain and Italy.

They are very compact 8 x 2 x1 cm. My thought is that if plugged into a Rasberry Pi with a bit of linux it should be possible to read the data to and from the dongle and a further piece of code to the APM

Comment by Alan on August 7, 2012 at 5:18am

Alan, is this a GSM dongle ?

Yes

Comment by Tommy Larsen on August 7, 2012 at 4:33am

Alan, is this a GSM dongle ?

Comment by Alan on August 7, 2012 at 4:03am

Anyone thought of using a USB Dongle connected to a Raspberry Pi USB 

I don't have a Rasberry PI at the moment but would be interested in any comments as to is it doable.

The Dongle I have also has a Micro SD slot and does anyone know what it could be used for.

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