Seven segment LED display module with TM1637 4-wire interface
Pin names
Data input (also used for acknowledging data received)
The DIO pin is also used for acknowledging the data received from the microcontroller, by pulling it down at a specific clock cycle.
Attributes
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
