November 11, 2011
about 3 years ago
Got Gophone working with this badboy, that is the best way to go. You get sms, voice and data on one card. Need to get the gophone sim unlocked first. I just walked down to AT&T store and asked them to unlock the sim and they gave me a new sim with same phone number.
Also, didn’t work out of the box, finally realized that I needed to send it the AT+SBAND=7 command to work with AT&T in the US (see page 127 of http://tronixstuff.files.wordpress.com/2011/01/sm5100b-at-commands.pdf).
Also, found this (http://tronixstuff.wordpress.com/2011/01/19/tutorial-arduino-and-gsm-cellular-part-one/) tutorial to be invaluable.
You will want to get the NewSoftSerial (http://arduiniana.org/libraries/newsoftserial/) library, the TinyGPS (http://arduiniana.org/libraries/tinygps/) library and the PString (http://arduiniana.org/libraries/pstring/) library before proceeding.
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