The main objective of Smart GSM mailbox
is to detect the presence of letter in the house so that the risk in lose the
important letters can be reduce. Using
PIC Microcontroller 16F877A
as the main device in controlling all the minor devices such as buzzer, LCD display
and also LED. All the functions of minor
devices will be program in PIC 16F877A.
The other major device is GSM which is functions to sending the SMS to
inform the arrival of the letter. So
that, the customer will be alert to the letter exists.
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