In control system used in the process, we occasionally meet the LED screen, the phenomenon of the all black screen. The same kind of phenomenon may be caused by different reasons, even the process of black screen will vary due to different operation or due to the different environment. Such as it may be a moment of electricity is black, may also turn black in the process of loading, also may be black, and so on after sent:
1, please make sure that all hardware, including control system, has all right to electricity. (+ 5 v, don't pick up the, wrong)
2, check and double-check the serial port of the used to connect to the controller for loose or falls off phenomenon. (if the black in the process of loading, probably because the reason is caused, namely in the process of communication due to the communication line