TM1637 7-Segment Display

Seven segment LED display module with TM1637 4-wire interface

Seven segment LED display module with TM1637 4-wire interface

Pin names

CLK · pin

Clock input

DIO · pin

Data input (also used for acknowledging data received)

VCC · pin

Supply voltage

GND · pin

Ground

The DIO pin is also used for acknowledging the data received from the microcontroller, by pulling it down at a specific clock cycle.

Attributes

color · string · default: "red"

The color of the segment LEDs

Using the 7-segment display

This variant of the seven segment display uses the TM1637 chip. You’ll only need 2 microcontroller pins to communicate with it.

The TM1637 communication protocol is non-standard. It resembles the I2C protocol, but it is simpler and incompatible with I2C. Luckily, you can use a library and not worry about the implementation of the protocol. Here are some TM1637 libraries you can use on Arduino: RT1637_RT(https://github.com/RobTillaart/TM1637_RT), Grove 4-Digit Display.

Simulator examples

• TM1637 Counter
• Three TM1637 displays
• TM1637 Thermometer (MicroPython on Pi Pico)