For my engineering class, we are doing a project that involves sending a text from the arduino uno. We have an itead sim900 gsm/gprs minimum system module. We found a code for the text shield, yet it still will not send a text. I'm not sure if we have it wired correctly. I can't find a wiring guid…

Itead Sim900 Wiring/Programming

system May 4, 2014, 5:21pm 5

This one ?

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