Automatic Bell AT89S8252

Posted on Mar 3, 2013

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.

Automatic Bell AT89S8252
Click here to download the full size of the above Circuit.

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 t

Leave Comment

characters left:

New Circuits



Popular Circuits

Time Delay Relay
RF probes
Data Line Remote Short Sensor
3V Battery To 5V Dc/Dc Converter
Constant Current LED Drive
16x2 LCD Display Custom Characters Circuit
Simple GPS Disciplined Reference
An automatic voltage regulator circuit
High-rise residential walkway lighting control circuit