Hi, I have a number of ITEAD 3G shields, and am now trying to implement SMS messaging. The SMS SEND works fine, and I can receive messages, but I can't read messages that have been sent back.
I use the AT+CMGF=1 to ensure it is in text mode.
All of these commands only return OK, and I know there are messages there, because I have responded to an SMS from this device.
Is there something else that needs to be done?
I am having all sorts of problems trying to get my sms based messaging system working on 3g in Australia. Would you mind sending me your code for sending and receiving? I am not getting the unit to connect to the telstra (Australia) network at all.
I am new to Arduino and the ITEAD 3G shield, I have purchased the ITEAD and Arduino MEGA 2560 and trying to communicate with my cell phone by sending SMS and calling to my mobile no, I tried with lot many code and studied lots of details but not getting how to communicate or make my ITEAD shied to work.
I was trying to communicate by writing the code in Arduino IDE but not getting any response.When I was searching for some codes if anybody has worked with I got your details, could you please let me know how to communicate by at-least sending SMS and calling to any mobile number. or If you have any code could you please send it to me.
I have powered using the USB to arduino and from arduino on board 5V pin connected to ITEAD 3G shield and respective TX and Rx pins are connected in reverse way.
Radu, you can't use pins 1-7 on a mega to communicate with the ITEAD. I use pins 50 and 51 on the mega, and wire them to connect through pins 6-7 on the top of the ITEAD board. You also cannot use the USB power for powering the mega and the ITEAD, as the itead draws too much current. You need to power them through the VIN pin, and I power them at between 7 and 8 volts.