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GSM Modem Interfacing With Arduino

In this tutorial we will learn how to interface GSM Modem and send SMS. GSM Modems are easy long range interface where we need to read sensor data or control electrical equipment. We will start with selection of GSM modem, AT commands and connection of GSM Module with Arduino. A GSM modem is a specialized type of modem or phone hardware on small PCB which accepts a SIM card, and operates over a subscription to a mobile operator, just like a mobile phone. Continue reading GSM Modem Interfacing With Arduino