TM1637 4-Digit 7-Segment Display Module - 2-Wire Control, 8-Level Brightness, Compatible with Arduino/STM32

4-digit digital tube display module Arduino LED brightness adjustable with clock point accessories building blocks

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 needed to enable the single-chip microcomputer to control the 4-digit 8-segment digital tube.
The module features are as follows:
The display device is a 4-digit common anode red-digit digital tube
Digital tube 8 levels gray scale adjustable
The control interface level can be 5V or 3.3V
4 M2 screw positioning holes for easy installation

Control interface:A total of 4 pins (GND, VCC, DIO, CLK), GND is the ground, VCC is the power supply, DIO is the data input and output pin, and CLK is the clock signal pin;

Digital Tube:4-digit common anode 0.36 inch digital tube with score point, red letters are highlighted;

Positioning hole:4 M2 screw positioning holes with a diameter of 2.2mm, which make the module easy to install and position, and realize the combination between modules;

Overview of library routines:

1. ClockDisplay: Use the timer 1 of the MCU on the main board to time, and let the 4-digit digital tube display.
2. NumberFlow: 0~9, A, b, C, d, E, F and other 16 characters flow from right to left.
3. StopWatch: Use the timer 1 of the MCU on the main board to time, and can cooperate with the button to realize the stopwatch function.

experiment equipment:

1 Arduino compatible motherboard Catduino (not familiar with open source hardware can be understood as Atmega328P MCU development board) and a mini USB cable;
1 4-digit digital tube display module;
4 male-to-female Dupont wires, used to connect the control interface of the module and the Catduino development board;

Experimental steps:

1. Connect the 4-digit digital tube display module and Catduino with 4 male to female Dupont wires, as shown in the table and figure below

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