The TM1637 LED Display Module is a compact, easy-to-use 4-digit 7-segment display with a built-in driver IC, perfect for Arduino, ESP8266, and Raspberry Pi projects. With its bright red LEDs and simple 2-wire serial interface, this module is ideal for displaying numeric data in clocks, counters, timers, and measurement devices.
Key Features & Benefits:
✅ 4-Digit 7-Segment Display – Clear and bright red LED digits (0.36″ height)
✅ Built-in TM1637 Driver IC – Simplifies wiring and coding (only 2 control pins needed)
✅ I²C-like Serial Interface – Uses DIO (Data) and CLK (Clock) for communication
✅ Adjustable Brightness – Control LED intensity via software (8 levels)
✅ Low Power Consumption – Energy-efficient for battery-powered projects
✅ Compact & Breadboard-Friendly – Easy to integrate into prototypes
Applications:
✔ Digital clocks & timers
✔ Temperature/RPM/speed displays
✔ Scoreboards & counters
✔ Arduino/ESP8266/Raspberry Pi projects
✔ DIY voltmeters & sensor readouts
Technical Specifications
- Display Type: 4-digit, 7-segment LED
- Digit Size: 0.36 inches
- LED Color: Red
- Driver IC: TM1637
- Operating Voltage: 3.3V – 5V
- Interface: 2-wire communication (CLK, DIO)
- Dimensions: Compact design for easy integration
- Power Consumption: Low-power operation
- Viewing Angle: Wide-angle visibility
- Operating Temperature: -40°C to +85°C
FAQ:
1. Can this display show letters or symbols?
Yes, but only limited custom characters (like “A”, “b”, “C”, “d”, etc.) by manually controlling segments.
2. Does it work with 3.3V microcontrollers (ESP8266/ESP32)?
Yes! The module supports 3.3V – 5V logic levels.
3. How do I adjust brightness?
Use display.setBrightness(0-7) in code (0 = off, 7 = brightest).
4. Can I connect multiple TM1637 displays?
Yes, but each needs separate CLK/DIO pins (no native daisy-chaining).
5. Is a resistor needed for the LEDs?
No, the TM1637 driver IC handles current regulation.
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