Arduino 4 Digit 7 Segment Multiplexed Display Board Using ATmega328 Chip

Tiny 4 Digit 7 Segment Arduino compatible display module  to create  display related projects like, counter, timer, thermometer, games, voltmeter, current meter, light meter,  and other projects required 4 digit display,   on board connector provided to program the Arduino boot-loader and Arduino code using Arduino IDE. Circuit works with 5V DC.


  • Supply 5V DC
  • 4 Digit 7 Segment Common Cathode Display
  • On board AT-mega 328 Chip
  • On Board LM35 Temperature Sensor
  • On Board Magnetic Flux DRV5053 Sensor
  • On Board Connector for Boot loader & Arduino programming
  • Gerber File  Available On Request
  • 2 Tactile Switches

Download PDF Document

Download PDF Schematic


Arduino Pin Configuration

  1. Display Digit1>D10,Digit2>D11, Digit3>D12, Digit4>D13
  2. Segments A>D2, B>D3, C>D4, D>D5, E>D6, F>D7, G>D8, D9>DP
  3. Tactile Switch 1>A2
  4. Tactile Switch 2>A3
  5. LM35>A1
  6. DRV5053>A0






Note : This board required boot loading , and then can be program with help of Arduino IDE, CN1 connector is provided for both boot loader burning and Arduino code programing.

More Details About Boot Loader

More Details About Arduino Programing


check the connection diagram for programing

Arduino Code Programing ( CN1) Connector

You need a USB-to-serial converter or Arduino UNO without Atmega 328 to program this board. There are pin outs on the board for programming the Atmega328P. You need to connect RX, TX, 5V and GND. Then upload the code to the board with the Arduino software.


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