2.3 Inch Large Size 3 Digit 7 Segment SPI Display Schematic and PCB using 74HC595 and ULN2803

3 Digit 2.3 inch 7 segments SPI protocol Display module using 74HC595 project will display large size 7 segment 3 digit numbers. 2.3 Inch height, which can be visible over large distance.  More digit can be connected serially to each other easily trough connector.

This circuit is a 3 digit seven segment big display using 74HC595 shift register for easy control by micro-controller. useful circuit to make Timer, stop watch, Score Board, Token No, Vehicle counter at parking and many other applications.

Features

  • Supply 12V DC For Display
  • Supply 5V For logic 75HC595
  • Inputs data TTL signals

 

 

 

DOWNLOAD PDF PCB LAYOUT

DOWNLOAD PDF SCHEMATIC

 

 

 

 

 

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