John has an excellent tutorial on how to use SIM900 GSM module on Arduino. The tutorial can be found at:
http://tronixstuff.com/2013/09/18/tutorial-arduino-sim900-gsm-modules/
Tutorial – Arduino and SIM900 GSM Modules
John has an excellent tutorial on how to use SIM900 GSM module on Arduino. The tutorial can be found at:
http://tronixstuff.com/2013/09/18/tutorial-arduino-sim900-gsm-modules/
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