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→PWM test method
<li><p>In the linux system, the PWM in the 40 pin is turned off by default, and it needs to be turned on manually before it can be used. The detailed steps are as follows:</p>
<ol style="list-style-type: lower-alpha;">
<li><p>First run '''orangepi-config''', normal users remember to add > '''sudo''' permission</p>
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<li><p>Then select '''Hardware'''</p>
<p>[[File:media/image235.png|457x198px]]</p></li>
<li><p>Then use the arrow keys on the keyboard to navigate to the > position shown in the figure below, and then use the space to > select the PWM configuration you want to open</p>
<p>[[File:media/image316.png|279x222px]]</p></li>
<li><p>Then select '''<Save>''' to save</p>
<li><p>Then select '''<Back>'''</p>
<p>[[File:media/image264.png|370x112px]]</p></li>
<li><p>Then select '''<Reboot>''' to restart the system to make the > configuration take effect</p>
<p>[[File:media/image239.png|303x133px]]</p></li></ol>
</li>