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PROJECT DESCRIPTION

The project is designed to automatically operate an electric bell several times as required in an educational institution like school or college. It overcomes the difficulties of switching the bell on/off manually. This proposed system has an inbuilt real time clock (RTC) to keep a track of the time and thus to switch on/off the load accordingly.

The project uses a real time clock (RTC DS1307) interfaced with the microcontroller of the 8051 family. While the set time equals to the real time, the microcontroller gives command to the corresponding relay to turn on the bell, and then, another command to switch off the bell as per the program.

Multiple on /off time entries is the biggest advantage with this project. A matrix keypad is used for entering time. A 7-sement display is interfaced with the microcontroller to display time.

Furthermore, this project can be enhanced by interfacing a GSM modem to the existing project so that the bell ringing system can be controlled by sending an SMS to the control unit.

 

PROJECT HIGHLIGHTS
Easy to use, Self-explanatory kit.
All-inclusive solution kit.
Extensive audio-visuals available.
Branding-free material.
Pre-programmed Microcontroller.
Auto Ringing Timer for 5 periods.
Call/mail for Tech Support from 10 am - 7 pm.
Can be Customized for Arduino, Raspberry Pi, PIC
BLOCK DIAGRAM
Programmable School / College Bell Ringing System
Hardware Requirements
  • 8051 series Microcontroller
  • 7-Segment Display
  • RTC
  • Keypad
  • Relay
  • Relay Driver
  • LED
  • Crystal
  • Transformer
  • Diodes
  • Regulator
  • Capacitors
  • Resistors
  • Bell
Software Requirements
  • Keil compiler
  • Language: Embedded C or Assembly
Q & A
Q:  Which microcontroller is used in this project?
A:  The microcontroller used in this project is a 40 pin IC from 8051 family.
Q:  How to set the time?
A:  A numeric keypad is provided to set the time.
Q:  What is RTC?
A:  RTC stands for Real Time Clock. It provides time and date reference along with memory back up.
Q:  Where is it applicable?
A:  It is applicable in distribution system, Home appliances like geyser etc.
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