The TM1637 4-Digit Digital LED Display Module is a compact and easy-to-use numeric display solution designed for showing numbers, symbols, and limited characters. It uses the TM1637 LED driver IC, which simplifies control by requiring only two signal pins. This module is widely used in digital clocks, counters, timers, temperature displays, and embedded systems where a clear numeric output is needed.
Core Display Specifications
• Display Type: 4-digit 7-segment LED display
• Driver IC: TM1637
• Digit Count: 4
• Display Color: Red (most common variant)
Electrical & Interface
• Operating Voltage: 3.3 V – 5 V
• Communication Interface: 2-wire serial (CLK, DIO)
• Interface Pins: VCC, GND, CLK, DIO
• Brightness Control: Programmable (multiple levels)
• Onboard Components: Current limiting and driver circuitry
Performance Characteristics
• Stable and flicker-free display
• Fast refresh rate for real-time updates
• Low MCU pin usage
• Suitable for continuous operation
Physical Characteristics
• Module Type: PCB-mounted LED display module
• Display Layout: 4-digit with optional colon (variant dependent)
• Compact and lightweight design
• Easy mounting and wiring
Compatibility
• Arduino Uno / Nano / Mega
• ESP8266 / ESP32
• Raspberry Pi
• STM32 and other microcontrollers
• Clocks, timers, and counters
Key Advantages
• Uses only two data pins
• Simple programming and control
• Adjustable brightness
• Well-supported libraries available
Technical Insights
• Not compatible with standard I²C protocol
• Brightness and display data controlled via TM1637 commands
• Colon LED control depends on module variant
• Best visibility indoors and low-light environments
Applications
• Digital clocks and timers
• Temperature and humidity displays
• Counters and scoreboards
• Embedded system status displays
• Educational and DIY electronics projects
Pro Tip
• Use available TM1637 libraries for quick setup
• Adjust brightness for power saving
• Update display only when data changes
• Avoid long cable runs for CLK and DIO
Package Includes
• 1 × TM1637 4-Digit Digital LED Display Module