The TM1637 4-digit module was modified to add 3 buttons and 3 more indicator LEDs
![](https://cdn.hackaday.io/images/7014431589044383023.png)
It is easier to solder bodge wires to the pins of the 7-segment LED display instead of the pins of the TM1637 IC.
![](https://cdn.hackaday.io/images/8694751589044953654.jpeg)
For more details on modifications to these TM1637 4-digit modules see this video I made a couple years ago
See also this video on the Maxint R&D channel:
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