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Depending on the Arduino you have you should also need a GSM module. Some Arduino's come with such module, MKR 1400 GSM for example. If you do not have an on board GSM you should add it using a shield like the SIM900. Your SIM card will go into the board/shield and should be activated of course. Then you would need to write code and again, depending on your ...


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Is there any print out based on this; Serial.print("Initializing SD card..."); // see if the card is present and can be initialized: if (!SD.begin(chipSelect)) { Serial.println("Card failed, or not present"); // don't do anything more: return; } Serial.println("card initialized."); Solution; Try change const int ...


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