8 Seven Segment LED Display with Keys and LEDs using TM1638

The TM1638 8 Seven Segment LED Display Module with Keys and LEDs is a complete user interface module designed for embedded systems, Arduino platforms, and DIY electronics projects. The module integrates 8 seven-segment LED displays, 8 individual indicator LEDs, and 8 push-button switches into a single compact board controlled by the efficient TM1638 display driver IC.

The TM1638 controller enables communication with a microcontroller using only 3 digital I/O pins, greatly reducing wiring complexity and saving valuable GPIO resources. In addition to controlling the numeric display, the controller also manages the LEDs and button inputs without requiring additional pins.

The module supports displaying numeric and alphanumeric characters with adjustable brightness levels. It also supports cascading multiple modules together for larger display and control applications. The common cathode LED display design ensures reliable operation and excellent visibility.

This module is highly suitable for digital counters, clocks, menu interfaces, embedded control panels, gaming systems, measurement displays, and educational electronics projects.

Specifications

• Product Type: TM1638 Display and Key Module
• Controller Chip: TM1638
• Operating Voltage: DC 5V
• Seven Segment Displays: 8 Digits
• LED Indicators: 8 LEDs
• Push Buttons: 8 Keys
• Display Type: Common Cathode Seven Segment
• Brightness Control: 8 Levels
• Communication Interface: 3-Wire Serial Interface
• Connection Pins:
  • VCC
  • GND
  • STB
  • CLK
  • DIO
• Module Dimensions: 76 × 50 × 10 mm
• Weight: 27 g
• Maximum Cascade Support: Up to 6 Modules

Applications

• Digital counters
• Electronic clocks and timers
• Embedded user interfaces
• Arduino display projects
• Interactive control panels
• DIY gaming systems
• Sensor monitoring displays
• Home automation interfaces
• Industrial control systems
• Educational electronics projects