Automatic college bell(AT89S8252 & DS1307)
This Project takes over the task of Ringing of the Bell in Colleges. It replaces the Manual Switching of the Bell in the College. It has an Inbuilt Real Time Clock (DS1307) which track over the Real Time. When this time Equals to the Bell Ringing time, then the Relay for the Bell is switched On.
The Bell Ringing time can be Edited at any Time, so that it can be used at Normal Class Timings as well as Exam Times. The Real Time Clock is displayed on four 7-segment display. The Microcontroller AT89S8252 is used to control all the Functions, it get the time through the keypad and store it in its Memory. And when the Real time and Bell time get equal then the Bell is switched on for a predetermined time.
1.Circuit diagram(click on image to enlarge)

2.To get PCB design click here
For further code please leave comment or contact us……

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hi
it seams nice project if it is working the tell me how to get coadings for ic
it has been sent to ur email ID
riend, I need the programming of real-time clock urgently, because I have a project that will use their programming. My email is: xavier_timao@hotmail.com. Please if you can send me until next week, would be very grateful. Thanks and sorry if my English is not very good because I am Brazilian and I am studying English. bye
Sorry, but you also have a list of materials used in construction of the circuit? thanks a lot
this project is looking nice. Please send me the hex code to my mail.
please send the code!
dude.. can u plz mail me d material n code.. plz..plz..
Hi!thanks for want you have done to create this good idea of design this project but please can you send that project to my mail(willybizzle08@yahoo.com),thanks If I will get it!
great blog thank you
can u plz mail me d material n code.. plz..plz..
can you plz mail me the photo of of this project
i am getting very confusd
i mean i want the photo of project not circuit daigram
thanks in advance bro
Hello
Congrants for the design.
Please send me the code.