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The TM1637 4-Digit 7-Segment Display Module is an affordable, compact and easy-to-use digital display, ideal for DIY electronics, Arduino and robotics projects. The TM1637 driver chip handles the digit multiplexing internally, so you control it over a simple 2-wire, I2C-like protocol using just the CLK and DIO lines.
The LEDs are high-brightness red, and the module has only four pins in total: VCC, GND, CLK and DIO.
It runs from 3.3 to 5 V DC and draws under 30 mA when active. The PCB measures 42 x 24 x 12 mm and weighs about 8 g, and it works from -20 to +70 C.
Wire the four pins to your board, install a TM1637 library, and use its functions to show a number or, with the colon, a clock time. Brightness is set in software, so there is no separate resistor or potentiometer to adjust.
Beginners building counters, clocks, timers and simple sensor readouts who want an inexpensive numeric display.
Although many TM1637 boards use red digits, some batches ship with a different colour, so treat the LED colour as a nice-to-have rather than something to build a design around. Whatever the colour, the wiring and code stay the same, since the TM1637 chip is what matters for compatibility. If you want a clock look, use the built-in colon and update the digits once a second from a real-time source rather than the microcontroller's own clock, which drifts over long periods.
Four, with a colon for clock displays.
Two signal wires (CLK and DIO), plus power and ground.
3.3 to 5 V DC.
About 8 g.
Arduino, ESP8266, ESP32, Raspberry Pi and STM32.
| Brand | Generic |
|---|---|
| Dimensions | 42 x 24 x 12 mm |
| Display Interface | 2-Wire |
| Driver IC | TM1637 |
| Operating Voltage | 3.3-5V |
| Weight | 8.000000 g |
| Selling unit | PCS |
