LinkNode 4-Digit 7-Segment Module

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LinkNode Module : 4Dig-7Seg uses a chipset of TM1637 to drive a 12-pin 4-digit command anode 7-segment LED. The MCU only needs two GPIO lines to control it.

4D7S D1.jpg

4D7S D1 2.jpg

4D7S D1 3.jpg

4D7S D1 4.jpg


The module is connected to the base shield J1:

Module CLK --> LinkNode D1 G0

Module DIO --> LinkNode D1 G1

Install Library

* download library :


Place the TM1637 library folder your ”arduinosketchfolder/libraries/ folder”.

4D7S D1 5.png

Load Demo

Open “File->Examples->TM1637->TM1637Test” and upload to your LinkNode D1, You can see the number of loops displayed.

4D7S D1 6.png

4D7S D1 7.png