Abstract: The design of an embedded device that can manage up to eight devices by sending a specific SMS message from a mobile phone is discussed. This controller comes in helpful when we need to regulate the ON and OFF switching of devices but don't have access to a wired connection. A GSM modem is attached to a programmable microcontroller that receives SMS from a reference cell phone to do this. The control signal portion of the received SMS is extracted and converted to a format that is compatible with microcontrollers. For monitoring and sending of control signals to the modem, a PC linked to the microcontroller through serial connection via RS232 can be utilized.
Keywords: Android smartphone, Bluetooth Model, Single Microcontroller Chip.
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