This 7 segment LED Display has 4 digits which are controlled by TM1637 Driver Chip. It requires only two connections to control this TM1637 4 Bits Digital Tube LED Display Module. Also thanks to the I2C Bus you can control it using only 2 wires, leaving more pins available on your Microcontroller to 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 this TM1637 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 :
Ease to use.
Ease of multiplexing.
Can use as a 4 digit display unit.
Can use as a clock display.
DIY clock project.
4 digit display unit.
The counter project using 7 segment display.
4 M2 screws positioning holes for easy installation