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30 for segments + dots.
1 for brightness control
Sorry but I did not exactly understood your question.
But in schematic each led strip powering with N type power mosfet which controlling by Arduino.
Spend a little bit more time to reading schematic. You will get it
You need to set bit6 ON 02h register of DS3231.
1. Go to the ../Arduino/libraries/Sodaq_DS3231/src/Sodaq_DS3231.cpp
2. Open Sodaq_DS3231.cpp file.
3. Go to the line 223
4. Change the hrReg &= 0b10111111; to -> hrReg &= 0b11111111;
5. Save and exit.
6. Restart the project in Arduino IDE
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