I am working on trying to send an SMS using the GPRS Shield and Arduino UNO board. I have been following the wiki page for the GPRS Shield, and on the webpage under section 7.1.1 is where I encounter my error. (garden.seeedstudio.com/index.php … PRS_Shield)
I have my GPRS attached to my UNO, and when I try and upload my sketch (using Arduino sketch tool), I recieve the following error(s):
avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51
However, when I try to upload the sketch without the GPRS Shield attached, the upload works, but I don’t get a response from my Serial Terminal.
Any help would be appreciated, thank you.