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

The KD2BD ATV AM Video Modulator
200mW FM transmitter
Ratiometric resistance measurement
5V Boost Converter using LTC3440
Economy Timer 555 IC
Simple ADS-B Receiver