Tutorial How to 4-Digit Display Interface With Arduino UNO




This tutorial is going to teach you some basics on using 4- Digit Display with Arduino UNO

Step 1: Introduction


A 4-digit 7-segment LED display has 12 pins. 8 of the pins are for the 8 LEDs on a 7 segment display, which includes A-G and DP (decimal point). The other 4 pins represent each of the 4 digits from D1-D4.


1. Driver IC: TM1637

2. Size: 30mm x 14mm

3. Display Color: Red

4. Connection to an Arduino UNO:

  • VCC to Arduino 5v
  • GND to Arduino GND
  • CLK to Arduino digital pin, your choice
  • DIO to Arduino digital pin, your choice

Step 2: Pin Definition

Step 3: Hardware Installation

Step 4: Sample Source Code

To get the result, please download the sample source code attached below.

Step 5: Upload Source Code

Open the source code TM1367Test. Make sure com of arduino UNO and com port is same and please sellect the board is Arduino UNO.

Click upload.

Step 6: Result



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Question 1 year ago on Step 5

Hi there, if I want a timer displaying sec and tenth of seconds, how do I tweak the code? Thanks,