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Question 4 Smart settings, The 5th “how many lines brightness on the screen ", the LED screen is not brightness

1. Hub is connected, but in wrong direction.

QQ截图20190905170944.png    QQ截图20190905171006.png

2.The module is not plugged into the J1,the top row must connect to J1.

2.png     QQ截图20190905183907.png 

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Huidu Asynchronous LED Controller