I bought Kuman SIMCOM GSM/GPRS shield and I used the code found in below. But when I upload it to my Arduino UNO and open the serial monitor I get this error... Trying to force the baud-rate to 9600 1200 2400 4800 9600 19200 38400 57600 115200 ERROR: SIM900 doesn't answer. Check power and …

GSM/GPRS shield error.

system August 30, 2016, 5:09pm 4

cooltheo17:
yes in what?

The problem is either in the software or the mysterious hardware.

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