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Arduino and SIM900 GSM GPRS 3G Temperature and Humidity Logging, Mobile Stats : 4 Steps - Instructables
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Amazon.com: JDH Labs Tech GSM/GPRS Voice Data SIM900 Open Source Shield for UNO or MEGA Mobile Cellular : Electronics
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Problem connecting Arduino Uno R3 to SIM900 GPRS/GSM shield and sending an SMS - #24 by leonhardo - Arduino GSM Shield - Arduino Forum
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