SMS Based home Automation.Turn your old phone into a GSM module. Control device by sending SMS
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Object Detection Alert Call and SMS in Mobile using GSM SIM 800 Module | Arduino Projects
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GSM : Part 1(Setup)
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Don't buy a GSM module, use your old phone!
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Phone call based Detonator || Triggering relay from phone call | control bomb from phone call
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RFID Based Door Access Control System Using Arduino UNO R3
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Control Home Appliances Using #GSM module SIM 900A by sending an SMS.
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What can you do with an old phone
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