TM1638 Display with Keys – 8 Digits, 8 Buttons and LED Indicators in One Module

The 8-Bit LED Digital Tube with 8 Keys TM1638 Display Module is a versatile input/output module that integrates an 8-digit 7-segment LED display, 8 single LEDs, and 8 push buttons, all managed by the dedicated TM1638 driver IC. Its design allows for minimal I/O usage (just three control lines) and simplifies user interface development for microcontroller projects like Arduino, AVR, ARM, or Raspberry Pi based systems.

Key Features:

• 8-digit 7-segment LED display for numeric data display.

• 8 separate LEDs for status or signal indication.

• 8 tactile push buttons for user input.

• TM1638 driver chip – handles display scanning and key reading, requiring only 3 data pins (STB, CLK, DIO) plus power and ground.

• Serial interface: STB (strobe), CLK (clock), DIO (data I/O).

• 5 V supply compatibility with common microcontrollers.

• Compact dimensions (~75 × 48 mm) with easy mounting options.

Benefits:
✔ All essential display and input components in one module.
✔ Saves MCU I/O resources with TM1638’s efficient interface.
✔ Brightness adjustment possible via software.
✔ Supported by existing libraries for Arduino and other platforms.
✔ Ideal for interactive and embedded control applications.

Typical Uses:

• Digital clocks, counters and timers

• User interface panels for menu and control systems

• Interactive and game projects

• Data monitoring and visualization in embedded applications