Hello I have bought new Arduino GSM shield. I have connected it to arduino uno. I have inserted and tried with many sim cards Airtel, Vodafone, BSNL and tata docomo(Indian SIM cards). I am trying to send sms using the available code in the library. But unable to do so. There is PINNUMBER we need to…

Arduino GSM shield unable to connect (INDIA)

system April 18, 2015, 1:55am 6

I am very new to this. Using the Uno. What is the AT command? What is a DTE modum?

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