Abstract:

The project is designed on the DTMF decoding. Our modern telephone and even our mobile phone uses DTMF coding for number dialing. These DTMF codes can be decoded and utilised for useful purposes. The circuit utilizes IC8870 for DTMF decoding. Microcontroller 89C51 reads these codes and takes necessary action. Door latch can be opened by entering the correct password; we can also connect security sensors of our choice. In case of any breach of security, the device will dial out the pre-stored number and deliver an emer ....etc

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hi guys
guys i'm still w8ing for anyone's reply

kindly suggest me any solution

if someone have circuit diagram or project report it's my humble request to send that material on my id that is [email protected]

Thanks

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please send the full documentation of laser guided door opener
please send more about title details
....etc

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the idea suggested by sa4eed


This project is making an automatic door, which uses ultrasonic
frequency. generated by a ultra sonic module. and here didn't used any
micro controller. but used comparator to compare the voltage from the
ultrasonic receiver after reflecting. The comparator output s taken to
logic gates. and used a servo motor to open the door. ....etc

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Hello,
Dear friends i'm a student of electronics engineering and i\m doing a projet that's GSM controlled door latch opener with security dial-up with changeable numbers
Is there any one who'll help me by providing some basic information or providing some stuff related that project such as Circuit diagram, or any project report or any material tha'll guide me for that project

i'll be very garteful

Well i'm waiting for you kind reply Genious Mind Personalities
plz guide me


here is my e-mail id [email protected] ....etc

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im a student who s dng electronic engineering and telecommunication.. and i have decided to do the gsm based door opener as ma final project. in here there is a project for ma topic but im gng to use some modification for it. im gng to use messaging system instead of calling. how can i do this?
can u plz give me some ideas..
plz rep asap...
thankyou.. ....etc

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Dear friend i m doing my project that is Gsm controlled door latch opener with security dial-up with changeable numbers
so in short i need your help if you or any one have some helping material such as circuit diagram, Final project report, or any material related to that topic plz send me that material or page link from which i get it
i'll be very thankful to you all

here is my e-mail id : omer_waheed7hotmail.com

Best Regards

Reference: http://studentbank.in/report-gsm-controlled-door-latch-opener-with-security-autodial#ixzz1 ....etc

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Hello Sir ...
i want to know about 70. GSM CONTROLLED DOOR LATCH OPENER WITH SECURITY DIALUP WITH CHANGEABLE TELEPHONE NUMBERS (BASED)
please send me all detail with circuit diagram ...
my email id: [email protected]
thx .... ....etc

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