Hello ! I'm using uno +gsm shield to control a Led at pin13 by sms I have modified the code from this project http://scuola.arduino.cc/lesson/LVEVK1a/Using_SMS_messages_to_control_LED_color like this #include <GSM.h> // This includes the GSM library, included in your Arduino IDE #define PINNUM…

Control Led with Gsm shield

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