I have the UNO R3 with the Seeed Studio GPRS shield V2.
I’m using a SIM900 Debug program but I don’t seem to get the right output.
Is what I get.
I do as the tutorial suggests, sending AT through the Serial monitor, and I’m supposed to get an output that tells me it’s ready, but the random symbols are what I get instead.
SIM900_Serial_Debug.ino (561 Bytes)