The TM1637 LED Display Module is a versatile and efficient 12-pin display module designed for Arduino projects. It features a 4-digit common anode digital tube with an adjustable 8-level grayscale display, making it ideal for various digital display applications.

Key Features

• High Visibility: 4-digit yang red digital tube with a clock point for clear and bright display.
• Adjustable Brightness: 8-level grayscale adjustment for optimal visibility in different lighting conditions.
• Simple Control Interface: Requires only 2 signal lines to control the 4-bit 8-segment digital tube via the MCU.
• Easy Installation: Equipped with 4 M2 screw positioning holes for secure and hassle-free installation.
• Versatile Voltage: Supports control interface levels of 5V or 3.3V.

Technical Specifications

• Voltage: 3.3V (minimum), 5V (typical), 5.5V (maximum)
• Current (@5V): 30mA (typical), 80mA (maximum)
• Size: 42mm x 24mm x 12mm
• Weight: 8g
• Control Interface: GND (ground), VCC (power supply), DIO (data input/output), CLK (clock signal)
• Digital Tube: 4-digit common anode, 0.36-inch, red
• Positioning Holes: 4 M2 screw holes with a 2.2mm diameter

Library Routines Overview

• ClockDisplay: Utilizes MCU's timer 1 to display time on the 4-digit display.
• NumberFlow: Displays characters (0-9, A, b, C, d, E, F) flowing from right to left.
• StopWatch: Functions as a stopwatch using MCU's timer 1 and a button.

Experimental Setup

• Equipment Needed: Arduino-compatible motherboard (Catduino), mini USB cable, 4 male-to-female DuPont lines, 4-digit digital tube display module.
• Connection Instructions:
  • Connect GND to GND (black line)
  • Connect VCC to 5V (red line)
  • Connect DIO to D2 (yellow line)
  • Connect CLK to D3 (white line)
• Software Setup: Use Arduino IDE to load and burn routines such as NumberFlow, adjusting grayscale with the set() function in the TM1637 class.