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→How to use the USB camera
<li><p>First insert the USB (UVC protocol) camera into the USB interface of the development board</p></li>
<li><p>If the USB camera is recognized normally, a corresponding video device node will be generated under /dev</p>
{| class="wikitable" style="width:800px;"
|-
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<p>console:/ # '''ls /dev/video0'''</p>
<p>/dev/video0</p>|}</li><li><p>Then make sure that the adb connection between the Ubuntu PC and the development board is normal. For how to use adb, please refer to the instructions in the section on [[Orange Pi Zero 3#How to use ADB|'''how to use ADB''']]</p></li>
<li><p>Download the USB camera test APP in the <span class="mark">official tool</span> on the development board data download page</p>
<p>[[File:media/image346.png|344x183px]]</p>
<p>[[File:media/image347.png|575x145px]]</p></li>
<li><p>Then use the adb command to install the USB camera test APP to the Android system, of course, you can also use the U disk to copy the installation</p>
{| class="wikitable" style="width:800px;" |-| <p>test@test:~$ '''adb install usbcamera.apk'''</p>|}</li>
<li><p>After installation, you can see the startup icon of the USB camera on the Android desktop</p>
<p>[[File:media/image348.png|576x132px]]</p></li>
<span id="android-system-root-instructions"></span>
== Android system ROOT instructions ==
