DIY Soccer Substitution Board using AT89C51


Experience efficient and budget-friendly Soccer Substitution Board project. Designed using the AT89C51 microcontroller, this system offers customizable features, including the ability to program as per your requirements.

Project Information :-

Various types of soccer substitution boards are easily available in the market but these all are very expensive (cost around $200). So, we decided to design a project called DIY Soccer Substitution Board using AT89C51. The feature of the project DIY soccer substitution board is listed below.

  1. Low cost and low maintenance.
  2. Microcontroller based system thus programmed as per our wish
  3. Simple and easily understandable circuit and code.
  4. Four individual buttons switch to increase and decrease the score of two teams.

Additional Information

Language used:- EMBEDDED C


Resistors (all ¼-watt, ± 5% Carbon)

R1 – R8 = 10 KΩ

R9 = 1 KΩ


C1, C2 = 33pF (Ceramic Disc)

C3 = 10 µF/16V (Electrolytic capacitor)


IC1 = AT89C51 (Microcontroller)

IC2 – IC5 = 7447 (BCD to 7 segment decoder)

Four 7 segment displays

X1 = 12 MHz crystal oscillator

SW1 – SW5 = Push to on switch


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