4 Digit LED Display Board

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  • 4-digit LED display module, red highlights, with adjustable LED brightness and clock point, can display decimals, letters, etc.
  • The 7-segment displays are actually seven LEDs lined up in a particular pattern (the shape of ‘8’). Each of the seven LEDs is called a segment, which forms part of a numeric digit (both decimal and hex).
  • In addition to the 4-Digit 7-segments, the module has a ‘colon’ at the center which makes it very easy to create clock or time-based projects.
  • The driver IC is TM1637, compatible with Arduino.
  • The digital display tube can be controlled with only two signal lines, simple and easy to use.
  • Control interface: a total of 4 pins (GND, VCC, DIO, CLK), GND to ground, VCC for the power supply, DIO for the data input and output pins, CLK for the clock signal pin.
  • 4 M2 screw holes, easy to install, locate and combine modules.


  • LED Display Module TM1637 0.36” 4-Digit Clock Double Dots 7 Segment Red Digital Tube for Arduino Driver Board
  • The module is a 12-pin 4-digit common anode digital tube (0.36 inch) display module with clock dots. The driver chip is TM1637. Only 2 signal lines are required to enable the single-chip microcomputer to control a 4-digit 8-segment digital tube. The TM1637 module operates on a supply voltage of 3.3 to 5 volts and communicates via a two-wire bus, so it only requires two data pins plus VCC and ground.
  • The TM1637 supports many functions – including ON/OFF and brightness control of the LEDs as well as accessing each of the segments. It also allows you to adjust the brightness of the LEDs at software level.
  • GND is a ground pin
  • VCC pin supplies power to the module. Connect it to the 3.3V to 5V power supply
  • DIO is a Data I/O pin. Connect to any digital pin on Arduino.
  • CLK is a clock input pin. Connect to any digital pin on Arduino
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