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→Introduction to serial debugging tools
First you need to prepare a USB to TTL serial cable similar to the picture below:<br>
<div style="padding-left:200px;">[[文件:Orange-pi-3-img28.png|800px]]</div>
Connect the serial cable as shown in the figure below. The From the silk screen on the back of the board, you can see that the corresponding functions of the cables of different colors are as follows:<br>* Black——GNDBlack—GND
* Green-RX
* White-TX
And turn off flow control
<div>[[文件:Orange-pi-3-img35.png|800px]]</div>
== '''History''' ==
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