This 7 segmentLED Displayhas 4 digits which are controlled byTM1637 Driver Chip. It requires only two connections to control thisTM1637 4 Bits Digital Tube LED Display Module.Also thanks to the I2CBus you can control it using only 2 wires, leaving more pins available on yourMicrocontrollerto connect other things.

The module is a 12-foot clock with four common anode tube (0.36 inch) display module for driver IC TM1637, only two signal lines can make the MCU control four 7-segment digital tubes.

There are several modules using thisTM1637 chip to form a 4 digit numerical display module.TM1637 has also keyboard input capability but is not used in this module.

Pinout Description :

GND GND
Vcc 5V
DIO D2
CLK D3

Features :

1. Ease to use.
2. Ease of multiplexing.
3. Can use as a 4 digit display unit.
4. Can use as a clock display.
5. DIY clock project.
6. 4 digit display unit.
7. Electrical/Electronic projects.
8. The counter project using 7 segment display.
9. 4 M2 screws positioning holes for easy installation