A few days ago I received the SIM900 Quad-band GSM/GPRS Shield for Arduino. I want to send data from a temperature sensor to a MySQL data base but I can not comunicate the arduino uno with the shield. I tested the shield following the steps from this link SimPasture.com is for sale | HugeDomains bu…

SIM900 Quad-band GSM/GPRS Shield and Arduino Uno

dannable March 19, 2015, 7:25pm 10

Try dropping the Serial speed to 9600?

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