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7 Segment Display 4 bit Common Anode LED Module TM1637

The TM1637 4-Digit 7-Segment Display Module is a compact numeric display solution designed for microcontroller-based projects. The module integrates a TM1637 driver IC, allowing simple control using a two-wire digital communication interface (CLK and DIO), significantly reducing the number of required GPIO pins.

Package Includes:

  • 1 x TM1637 4-Digit 7-Segment LED Display Module

7 segment Module
19.95 AED 19.95 AED (Tax included)

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This display is widely used in applications requiring clear numerical output such as clocks, counters, timers, voltmeters, temperature monitors, and measurement systems. Thanks to its adjustable brightness and efficient communication protocol, it provides excellent readability while maintaining low power consumption.

Features

  • TM1637 Driver IC: Simplified 2-wire digital communication (CLK, DIO).
  • 4-Digit Display: Red common anode 7-segment LED display.
  • Brightness Adjustment: Software-controlled brightness (8 levels).
  • Low Power Consumption: Efficient LED driving architecture.
  • Minimal Wiring: Only two signal pins required.
  • Integrated Driver: No additional multiplexing required.
  • Negative Number Support: Built-in segment control.
  • Wide Compatibility: Works with 3.3V and 5V systems.
  • Stable Operation: Internal timing and scanning control.

Specifications

  • Driver IC: TM1637
  • Display Type: 4-Digit 7-Segment LED (Red)
  • Segment Configuration: Common Anode
  • Operating Voltage: 3.3V – 5V DC
  • Operating Current: 30 – 80 mA (typical)
  • Communication Interface: 2-Wire Digital (CLK, DIO)
  • Brightness Levels: 8 (0–7)
  • Module Dimensions: Approx. 42 × 24 × 11 mm

Pinout

ESP32: TM1637 4-Digit 7-Segment Display (Arduino) | Random Nerd Tutorials

Pin Name Description
1 CLK Clock signal input
2 DIO Data input/output
3 VCC Power supply (3.3V – 5V)
4 GND Ground

Arduino Library

Wiring with Arduino

TM1637 Arduino Tutorial: Interface 4-Digit 7-Segment Display

  • CLK → Arduino Digital Pin 2
  • DIO → Arduino Digital Pin 3
  • VCC → 5V
  • GND → GND

Example Arduino Code


#include "Arduino.h"
#include "TM1637Display.h"

#define CLK 2
#define DIO 3
#define TEST_DELAY 2000

const uint8_t SEG_DONE[] = {
  SEG_B | SEG_C | SEG_D | SEG_E | SEG_G,           // d
  SEG_A | SEG_B | SEG_C | SEG_D | SEG_E | SEG_F,   // O
  SEG_C | SEG_E | SEG_G,                           // n
  SEG_A | SEG_D | SEG_E | SEG_F | SEG_G            // E
};

TM1637Display display(CLK, DIO);

void setup() { }

void loop() {
  uint8_t data[] = { 0xff, 0xff, 0xff, 0xff };
  display.setBrightness(7);

  display.setSegments(data);
  delay(TEST_DELAY);

  display.showNumberDec(1234);
  delay(TEST_DELAY);

  display.showNumberDec(301, false);
  delay(TEST_DELAY);

  display.showNumberDec(-999);
  delay(TEST_DELAY);

  display.showNumberHexEx(0xf1af);
  delay(TEST_DELAY);

  display.setSegments(SEG_DONE);
  while(1);
}

Applications

  • Digital clocks and timers.
  • Counters and measurement displays.
  • Temperature and sensor readouts.
  • Embedded system dashboards.
  • DIY electronics projects.