Is there a way to connect a SIM module to a Gumstix? I've tried to find commercial solutions (add-on modules) that will do this but have not found any. Surely an addon providing mobile connectivity must exist?
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4\$\begingroup\$ Just the sim card? Or do you want something that lets you communicate over GSM? Those are two very different requirements. \$\endgroup\$– Nick JohnsonCommented Jul 15, 2011 at 5:36
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1\$\begingroup\$ SIM module, I want to connect to the internet via GSM. \$\endgroup\$– kwoCommented Jul 15, 2011 at 11:48
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3 Answers
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Depending on the gumstix module that you have, if you are using embedded linux with a board that has USB host, then you may be able to use a USB GSM modem - you stick the SIM card into it and then the module into a USB slot on a gumstix board. You would have to find drivers or write your own. A quick search finds that some people have had success using a particular model due to driver compatibility.
There are also a number of GSM modules that you can interface with using a UART channel. They are typically spoken to using an AT command set over a serial port. If you're willing to explore not having a perfectly clean modular connection (like with the gumstix expansion boards) then there are a lot of options for you.
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If you mean a GSM module and SIM card, it would be easy to interface them via a serial port. This unit has everything you need on one board. I once designed my own PCB interfacing a Siemens GSM module and SIM card to a PIC controller, it was quite easy.
answered Jun 14, 2011 at 18:29
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\$\begingroup\$ Thanks for the link, however, I'm looking for something that interfaces directly with a Gumstix providing GSM modem capability and keeping the small form factor to boot. \$\endgroup\$– kwoCommented Jun 14, 2011 at 19:20
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1\$\begingroup\$ I don't think that there is such a thing. I might design one, there is probably a market for it. \$\endgroup\$ Commented Jun 14, 2011 at 19:26
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\$\begingroup\$ Yes, I can imagine that quite a few people would be interested in something like this. \$\endgroup\$– kwoCommented Jun 15, 2011 at 8:17
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not sure but have a look digi product instead of gumstix.
HTH
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\$\begingroup\$ That is an independent wireless gateway product using 3G, but OP, imho is looking for a way to connect his gumstix to the net. For generic internet access he could use a regular PC as well. \$\endgroup\$– bdutta74Commented Jan 25, 2012 at 12:59