Automatic Bell System for Institutions

Model: 33A

Solderable DIY project kit for Engineering & Diploma students Worldwide

Do-It-Yourself Kit :

Includes complete hardware comprising of discrete components, modules, PCB, controller etc. and tested program code for building the project. Extensive documentation for project execution including step-by-step instructions for Circuit building, Assembly procedure and Troubleshooting. (Tool kit-Multimeter, Soldering iron and program burner not included in the kit)

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The project is designed to operate an electric bell number of times as required in an institution. It overcomes the difficulties of switching the bell ON/OFF manually. This proposed has an inbuilt real time clock (RTC) to keep tracking the time and thus to switch ON/OFF the load accordingly.

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

Multiple ON/OFF time entry is the biggest advantage with this project. A matrix keypad helps entering the time. A 7-sement display is interfaced to the microcontroller to display time.

Further the project can be enhanced by interfacing a GSM modem to the existing project so that the complete control of the bell can be done by sending an SMS to the control unit.


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


Hardware Requirements

  • 8051 series Microcontroller
  • 7- Segment Display
  • RTC
  • Keypad
  • Relay
  • Relay Driver
  • LEDs
  • Resistors
  • Capacitors
  • Transformer
  • Diodes
  • Crystal
  • Regulator
  • Bell

Software Requirements

  • Keil compiler
  • Language: Embedded C or Assembly

Q & A

Buyer Feedback

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  1. Rated 5 out of 5

    Nitish Malhotra

    Searched in Google and got the information. Not compared anything; though everything is getting is one place and that too reasonable way. Most attractive. Packing is good. All things and description is good. Everything is clear in website. No problem and got on time/ nothing to say.

  2. Rated 5 out of 5

    Vamsi Krishna

    I have taken the readymade kit and the kit is working very well. All the given soft components and the audio visuals are added an advantage of how to deal the project individually. Thanks to Edgefx Technologies.

  3. Rated 4 out of 5


    I have very impressed with the output of this project and the way that it designed for the engineering students.

  4. Rated 5 out of 5


    The given audio visuals are very effective and one can easily understand the step by step procedure to be followed to do the project. The hardware components are also working very well. Thanks to Edgefx Team.