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Documentation Index

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Seven segment LED display module with TM1637 4-wire interface

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Pin names

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CLK
pin
Clock input
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DIO
pin
Data input (also used for acknowledging data received)
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VCC
pin
Supply voltage
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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.

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Attributes

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color
string
default:"red"
The color of the segment LEDs

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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.

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Simulator examples

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