Arduino GSM shield

This is a very low cost and simple Arduino GSM and GPRS shield. We use the module SIMCom SIM900 . It’s the cheaper module now avalaible in the market. The module is not simple to mount by an hobbyst, so we use the Breakboard TDGGSM_900 that we presented here . You can buy the GSM module premounted here .   This is the GSM_shield library documentation: Here is a GSM_shield Library intended for GSM Shiel ...

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