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

 4-Digit 7-Segment LED Display Module – Brightness Adjustable with Clock Colon (:) for Time & Data Display

 Overview:

This 4-digit digital tube display module is a compact and easy-to-use LED module commonly used to show numbers, time, or counters in Arduino, ESP32, and other microcontroller projects. It often comes with a clock point (colon) and adjustable brightness feature.

Key Features:

• Display Type: 4-digit 7-segment red LED
• Controller Chip: Usually TM1637 or MAX7219
• Voltage: 3.3V – 5V
• Interface: 2-wire (TM1637) or SPI (MAX7219)
• Brightness: Adjustable in software (8 levels on TM1637)
• Clock Colon: Built-in colon : between digits 2 and 3, great for clocks

Typical Applications:

• Digital clock
• Stopwatch or countdown timer
• Temperature/humidity display
• Scoreboards or numeric counters
• Sensor data visualization

 TM1637 Pinout:

Pin	Function
VCC	Power (5V)
GND	Ground
DIO	Data
CLK	Clock

 Notes:

• If using MAX7219 version, you’ll need a different library (LedControl.h or MD_MAX72XX)
• Make sure to match the display type (common cathode/anode or chip type) to the library