TinyCircuits Forum

General Category => New Product Ideas => Topic started by: RiffRaff on September 19, 2013, 07:59:06 AM

Title: 3G Shield
Post by: RiffRaff on September 19, 2013, 07:59:06 AM
Hi Guys

thinking a shield that has 3G/4G micro sim card, combined with GPS would be very handy for tracking

cheers Riff
Title: Re: 3G Shield
Post by: tomcUT on September 19, 2013, 05:23:17 PM
Title: Re: 3G Shield
Post by: raminf on September 22, 2013, 03:31:43 PM

I'm backing this one http://www.kickstarter.com/projects/sparqee/sparqee-cellv10-cellular-made-easy-arduino-pi
but it would be great if it could be made to work in a Tiny form factor.
Title: Re: 3G Shield
Post by: chall2009 on September 22, 2013, 09:21:15 PM
I'm going to through in my support for this one as well!
Title: Re: 3G Shield
Post by: wafel on October 17, 2013, 05:23:44 AM

That would be just awesome!
Title: Re: 3G Shield
Post by: tomcUT on October 22, 2013, 03:57:50 PM
this would be cool
Title: Re: 3G Shield
Post by: hwt on January 22, 2014, 08:45:19 AM
Hello all,

I urgently need such a Shield for a tracking project. Very good idea!
Title: Re: 3G Shield
Post by: raulp on February 06, 2014, 10:47:16 AM
A micro antena?
Title: Re: 3G Shield
Post by: hackman on February 08, 2014, 08:36:19 AM
I will also want 3G/4G shield, but there should be two options for the antenna, built-in and external. It is pretty hard to solder smt connector on these thin PCBs :)
Title: Re: 3G Shield
Post by: tinybuilder on March 01, 2014, 09:14:35 PM
That would be a nice addition. Even a cellular modem without voice capability would be quite useful.

I know of 3 GSM modules that may be small enough to work with on a shield the size of the "TinyShield Proto Terminal Blocks" (I don't know the exact size of that board but it looks about 26x30 mm) - the uBlox SARA-U2 series (16x26x3 mm), the Telit UL865 (24.4x24.4x2.6 mm), and the SIMcom sim900 (24x24x3 mm)

Using the "TinyShield Proto Terminal Blocks" as a starting point, the connector and mounting holes for the shield would have to be shifted back towards the connector edge so the GSM module could be squeezed onto the board. A SIM card holder would need to be mounted under the board. A U.FL connector for the antenna, a TRRS 2.5 mm jack for ear/voice, and all other support circuitry should probably be put onto the bottom side of the shield. Many of these GSM module's features require lots of pins... this would impact what other shields could be used in the stack. These pins would have to be sussed out to see which ones could be ignored.

A good start on a wiring diagram and components for a Telit UL865 can be found at http://www.mikroe.com/downloads/get/1921/gsm_click_manual_v101b.pdf (http://www.mikroe.com/downloads/get/1921/gsm_click_manual_v101b.pdf) for the MikroElektronika GSM click. I could only find code for a project using the Telit gm862 http://tinkerlog.com/2009/05/15/interfacing-arduino-with-a-telit-gm862/ (http://tinkerlog.com/2009/05/15/interfacing-arduino-with-a-telit-gm862/) which could be somewhat helpful.

A great project using the SIM900 is the Arduino Phone found on Instructables
Instructions: http://www.instructables.com/id/ArduinoPhone/?ALLSTEPS (http://www.instructables.com/id/ArduinoPhone/?ALLSTEPS)
Code on GitHub: http://yexiaobo-seeedstudio.github.io/ArduinoPhone/ (http://yexiaobo-seeedstudio.github.io/ArduinoPhone/)
Title: Re: 3G Shield
Post by: wfalkwallace on June 11, 2014, 02:03:37 PM
Title: Re: 3G Shield
Post by: alexcc on July 12, 2014, 07:19:31 AM

I have been searching in the market but all available units seem to be far too big
Title: Re: 3G Shield
Post by: katysei on September 03, 2014, 03:33:34 AM
great idea.
its almosta must this days.
Title: Re: 3G Shield
Post by: katysei on September 25, 2014, 03:57:16 PM
A must for me.
Title: Re: 3G Shield
Post by: mroz on November 01, 2014, 10:50:20 AM
I'd be all over a TinyGSM module like a cheap suit....

Title: Re: 3G Shield
Post by: calvinthedestroyer on November 19, 2014, 01:06:48 PM
We have one prototype shield, but it's going to be a while before that shield will get released. This might be a good shield to do a kick starter for to help drive down the cost.

Title: Re: 3G Shield
Post by: MadGeometer on October 05, 2015, 10:46:24 PM
Title: Re: 3G Shield
Post by: francescomm on December 01, 2015, 09:51:19 AM
+1 My vote
Title: Re: 3G Shield
Post by: SilverOne on February 13, 2016, 06:13:11 PM

Any updates on this? It would definitely make my day  8)
Title: Re: 3G Shield
Post by: SurfCoders on May 04, 2016, 09:13:18 AM
Any updates?  Been a while...
Title: Re: 3G Shield
Post by: WJR1989 on June 05, 2016, 01:09:58 AM
One of the biggest obstacles has to do with the lengthy (months to well over a year: having to get in the "queue" to get your unit certified, it can be costly to have this certification performed - can be in the tens of thousands of dollars) and without a LARGE quantity (as in many tens of thousands of units) this can often derail a product/project like the one being proposed - having worked for a cellular carrier in the USA, I have been through the process - and it is beyond painful.

That said, there are already a couple of options that are off the shelf today:

* One option MIGHT be to take a look at the stacking cellular module that Microduino has developed as a stackable module (similar to the Tinyduino form factor, but the connector system is significantly different.  Most likely, you would build the entire project using the Microduino system.  NOTE: I have not worked with this device, and do not know what carriers it is certified with or the countries in which it was designed to operate.  With the sunset of 2G GSM/GPRS in the USA, it will not a viable candidate for very long if the product must work in the USA since support for 2G GSM/GPRS - largely provided by AT&T is going away in the USA by 2017.

* A more simple approach that accommodates various antenna options and supports GPS on some of the units is the Eurotech ReliaCELL (a USB-connected cellular modem).

* It comes in various flavors: 2G-only (1xRTT) in the $90 range in qty., 2G/3G in the $130 range in qty., or LTE.

It is worth noting that some cellular carriers, such as Sprint, will continue to support CDMA 2G 1XRTT for a number of years - which means that a less expensive 2G-only unit could be used for a while).  However, the 3G-capable and LTE-capable models will have a longer useful life.

* The antenna can mount directly to it and it can be mounted to the outside of the device enclosure or even be mounted remotely (as in outside of a vehicle or building since it is weatherproof) at distances as far away as you can "legally" run USB according to the standard (active USB repeater cables can extend this distance significantly). 

* The ReliaCELL approach has several advantages since cellular coverage can vary in different locations/environments/buildings and the cellular receiver may need to be mounted remotely from where the embedded device needs to be located.  When that is the case, the Reliacell can be treated almost like an intelligent antenna that is USB-connected.  No long coax runs are needed (and so no RF signal loss from those long coax runs) since USB is used.

The biggest advantage, though is that the ReliaCELL devices are already carrier certified.  That means you can begin deploying in production immediately and not go through the pain, cost, and delay of carrier certification.

This is discussed in further detail along with additional info regarding adding cellular connectivity as well as the data sheets for the ReliaCELL, Microduino 2G shield, and the AT&T 2G GSM/CDMA sunset in the following thread on this forum:


Hope this was helpful...

Title: Re: 3G Shield
Post by: Sasha W on August 24, 2016, 05:44:23 AM
Awesome!!I think I have saw a shield which is similar to this,and it is for Arduino,looking foward to see this one!