joplin-mdbooks-website/content/drone-stuff/omnibus-f4-pro-servo-diode.md

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title = "Omnibus F4 pro servo diode"
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weight = 3
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sort_by = "weight"
insert_anchor_links = "right"
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To isolate the servo 5V rail from the controller's 5V power supply, remove this diode:
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[![a435bcae86912205b6fac41731285b8d.png](../../resources/6d668e05d8a54580966b94a752f3b7db.png)](../../resources/6d668e05d8a54580966b94a752f3b7db.png)
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Now the servos' 5V rail can be powered from another 5V supply to avoid servo current backflow into the FC.