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GSM controlled door latch opener (8051 based)

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ak47thousand

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gsm door opener

Basic idea is to monitor cel phone serial port for changin status usin 8051. a change will cause the 8051 to perform a security chk of the incomin msg on the cel. and then if matched ,8051 will operate a relay to open a latch.
problems are

1. how to interface 8051 to a cel phone?
2. how to read from cel phone?
3. which cel phone to be used?

thanx in advance....plz reply to my mail address thank you
 

gsm controlled door latch

u can talk to cel-phone using at commands.
for that u to learn
1> at commands
2> SMS PDU format

u can select any cel phone which supports at command
 

gsm based door latch opener

can u provide the project
 

security latch opener

yes i have done similar project but not using at command, i have used mbus commands which are more complex to use.
 

door latch opener using microcontroller

Any links to start of with??

are AT and AT+ commands compatible with 8051??
whn i looked they were sent to the GSM device thru a hyperterminal on a pc.


this is how it should work
1.incoming SMS or msd call on GSM device.
2.change in port pins detected by 8051.
3.proceed to obtain number of the sender.
4.compare and verify the number with predefined value(for security)
5.if matched operate realy to open latch else idle.

thanx

Added after 1 minutes:

operate relay (not realy)
 

gsm based controlled latch opener

Salam,

if u intended to use old ericsson or seimens phone then you have to know the AT commands

but if you intend to use nokia phone u have to know mbus/fbus commands

Regards.
 

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